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#21 | RE: Birds of Prey Anatomy & Physiology Fri Aug 02, 2013 10:41 am
patticake
Falcon vs Raven in Slow Motion - Slo Mo #25 - Earth Unplugged
#22 | RE: Birds of Prey Anatomy & Physiology Fri Aug 02, 2013 3:34 pm (Last edited: Fri Aug 02, 2013 3:35 pm)
SCluvineagles
An interesting and comical video on owls. I clicked from one of the chatters early this morning to watch this afternoon, so I'm not sure who posted this.
http://www.youtube.com/watch?v=XeFxdkaFzRA&feature=youtu.be
#23 | RE: Birds of Prey Anatomy & Physiology Sat Aug 17, 2013 10:25 pm
The Feather Atlas - Feather identification and Scans - U.S. Fish & WildLife Service Forensics Laboratory:
http://www.fws.gov/lab/featheratlas/index.php
FEATHER TERMS AND ILLUSTRATIONS:
http://www.fws.gov/lab/featheratlas/glossary.php
― Ansel Adams
#24 | RE: Birds of Prey Anatomy & Physiology Sun Sep 01, 2013 12:07 pm
National Geographic Wildlife Wonders, Owls - The Silent Hunters
#25 | RE: Birds of Prey Anatomy & Physiology Sat Oct 12, 2013 11:02 pm
Posts from Friends of the Redding Eagles on FB
Friends of the Redding Eagles shared Eagleholics's photo.
Eagle Fact for Thursday, September 13, 2012
The tail also helps to brake the eagle when landing and assists in stabilization during a controlled dive or swoop toward prey. The strength of the feathers and the follicles holding the feathers
is quite impressive, while watching the tail move back and forth and up and down during maneuvers.
https://www.facebook.com/photo.php?fbid=...&type=1&theater
Eagle Fact for Friday, September 14, 2012
Bald eagles have 7,000 feathers. Eagle feathers are lightweight yet extremely strong, hollow yet highly flexible.
Eagle Fact for Saturday, September, 15, 2012
The feathers protect the eagle from the cold as well as the heat of the sun, by trapping layers of air. To maintain its body temperature an eagle simply changes the position of its feathers
Eagle Fact for Sunday, September 16, 2012
While an eagle suns itself on a cold morning, it ruffles and rotates its feathers so that the air pockets are either opened to the air or drawn together to reduce the insulating effect.
Eagle Fact for Monday, September 17, 2012
Feathers also provide waterproofing and protection, and are crucial for flight. Feather structure makes pliability possible. Overlapping feathers can form a dense covering, which the birds can open or close at will.
Eagle Fact for Tuesday, September 18, 2012
The bald eagle has several layers of feathers, each serving a different function. Under the outer layer of feathers is an inner layer of down or smaller feathers. The inter locking of feathers is an astonishing design of nature.
Eagle Fact for Wednesday, September 19, 2012
The feathers enable eagles to live in extremely cold environments. Eagles do not have to migrate to warmer areas each year to fulfill temperature requirements, they migrate to available food supplies.
Are you all getting tired of the feather theme? Well, guess what? This is the LAST one for now!
A lone eagle feather is believed to convey great power. North American Indians incorporated the e
agle's primaries and tail feathers into their ceremonies and legends.
I am posting a video about what they do with eagles when they find them deceased. There are some parts that you may find disturbing as they do show deceased eagles. If you feel that will offend (or bother you) you in any way, do not watch the video! It is very educational.
http://www.youtube.com/watch?v=krIy8it2gvY
The Beak:
The hook at the tip of the beak is used for tearing. Behind the hook, the upper mandible, the edge is sharp enough to slice tough skin. The upper mandible overlaps the lower, creating a scissors effect.
Eagle Fact for Saturday, September 22, 2012
A bald eagle's beak is a strong weapon, but is also delicate enough to groom a mate's feathers or feed a small portion of food to a newly hatched chick.
Eagle Fact for Sunday, September, 23, 2012
Talons:
Talons are important tools for hunting and defense. Eagles kill their prey by penetrating its flesh with their talons. The talons are very strong and can grasp prey at strengths of 2600 po
unds per square inch. This is the equivalent to driving a nail through concrete.
The beak and talons grow continuously, because they are made of keratin, the same substance as our hair and fingernails.
The beak of a captive eagle is not worn down naturally, so must be trimmed annually.
Revisiting feathers - I found some more info!
What is a pin feather?
As the eaglets grow we can see tiny pin feathers on their wings. Pin feathers are how new feathers are born. The feather com
es out wrapped in a thin shaft of tissue, which will eventually split, allowing the new feather to unfurl and grow to its full size.
As the feather forms, its shaft (calamus or quill) has a vein and artery running up through it with a blood supply to nourish the growing feather.
One last thing about feathers!!
The feather's barbs unfurl and "zip" together with tiny hooklets called barbules, the blood supply recedes, the shaft turns white and remains hollow, and the feather is ready for action.
Before European settlers first sailed to America's shores, bald eagles may have numbered half a million. They existed along the Atlantic from Labrador to the tip of south Florida, and along the P
acific from Baja California to Alaska. They inhabited every large river and concentration of lakes within North America. They nested in forty-five of the lower forty-eight states. One researcher estimated an eagle nest for every mile of shore along Chesapeake Bay. They congregated on the lower Hudson, and were extremely abundant along the coast of Maine.
Eagle Fact for Sunday September 30, 2012
There is no single cause for the decline in the bald eagle population. When Europeans first arrived on this continent, bald eagles were fairly common. As the human population grew, the eagle population declined. The food supplies for eagles decreased, because the people hunted and fished over a broad area.
Eagle Fact for Monday - OCTOBER 1, 2012
cont'd from yesterday's fact:
Essentially, eagles and humans competed for the same food, and humans, with weapons at their disposal, had the advantage. As the human population expanded westward, the natural habitat of the eagles was destroyed, leaving them fewer places to nest and hunt, which caused the population of bald eagles to decline sharply by the late 1800s.
Eagle Fact for Tuesday - October 2, 2012
By the 1930s, people became aware of the diminishing bald eagle population, and in 1940 the Bald Eagle Act was passed. This reduced the harassment by humans, and eagle populations began to recover. However, at the same time DDT and other pesticides began to be widely used. Pesticides sprayed on plants were eaten by small anima
ls, which were later consumed by birds of prey. The DDT poison harmed both the adult birds and the eggs that they laid. The egg shells became too thin to with stand the incubation period, and were often crushed. Eggs that were not crushed during incubation often did not hatch, due to high levels of DDT and its derivatives. Large quantities of DDT were discovered in the fatty tissues and gonads of dead bald eagles, which may have caused them to become infertile.
Eagle Fact for Tuesday, October 3, 2012
cont'd from yesterday - some more history!!
More than 100,000 bald eagles were killed in Alaska from 1917 to 1953. Alaskan salmon fisherman feared they were a threat to the salmon population. (ugh . . . can you believe that???)
Public awareness increased, and many states placed the bald eagle on their lists of endangered species in the 1960s and early 1970s. Many dedicated individuals and groups worked to make the conservation of eagles a national issue.
Eagle Fact for Thursday October 4, 2012
A few more days of history, then we'll get into nesting and fun stuff!
Bald eagles were officially declared an endangered species in 1967 in all areas of the United States south of the 40th parallel, under a law that preceded the Endangered Species Act of 1973. The Endangered Species Act was signed into law in 1973 by President Richard Nixon. This landmark
legislation is regarded as one of the most comprehensive and important wildlife conservation laws in the world. Federal and state government agencies, along with private organizations, successfully sought to alert the public about the eagle's plight and to protect its habitat. On July 4, 1976, the US Fish and Wildlife Service officially listed the bald eagle as a national endangered species.
Eagle Fact for Friday October 5, 2012
Until 1995, the bald eagle had been listed as endangered under the Endangered Species Act in 43 of the 48 lower states, and listed as threatened in Wisconsin, Minnesota, Michigan, Washington and Oregon. In July of 1995, the US Fish and Wildlife Service upgraded the status of bald eagles in the lower 48 states to threatened.
Only a handful of species have fought their way back from the United States' endangered species list. The California gray whale, the American alligator, and the bald eagle are a few. Once endangered in all of the lower 48 states, the bald eagle's status was upgraded to "threatened" in 1995, two decades after the banning of DDT and the passing of laws to protect both eagles and their nesting trees.
Eagle Fact for Saturday, October 6, 2012
About half of the world's 70,000 bald eagles live in Alaska. Combined with British Columbia's population of about 20,000, the northwest coast of North America is by far their greatest stronghold. T
hey flourish here in part because the salmon. Dead or dying fish are an important food source for all bald eagles.
#26 | RE: Birds of Prey Anatomy & Physiology Wed Oct 30, 2013 11:19 pm
I keep remembering other things I learned at the Birds of Prey Class I attended Saturday. (I'm slow but good )
The DNR speaker told us about the most common problem in captive birds of prey is bumblefoot. I won't attempt to quote what he said about that so here's some info and pics about it.
Bumblefoot in Raptors
Bumblefoot remains one of the commonest and most serious diseases of captive birds of prey.
Bumblefoot is an infected lesion affecting the ball of the foot, or one or more of the toes. Bumblefoot is a common disease of large species of raptors (especially longwings) maintained in captivity and tends to become chronic, progressive, invasive and eventually disabling. It is often either unresponsive or recurrent when treated with traditional methods. If the condition does occur in hawks or broadwings, it is usually responsive to simple therapy, whilst in longwings recovery rates are typically much worse. The condition is common in captive bird (wild caught or captive reared) but rare in wild birds.
Raptor's feet are protected by a thick layer of dry hard skin. On the bottom surface is a covering of hard projections (tarsal pads), which help to spread the weight bearing function of the foot.
Bumblefoot arises for one of two reasons. Firstly following any penetration of the foot, caused by a talon, thorn, sharp foreign body, rusty chain link fencing or any other sharp or abrasive object which may simultaneously introduce infection either into the skin or deeper structures of the foot. Secondly, (and far more commonly), captive birds, whether kept tethered on blocks or free in aviaries, may suffer from a pressure sore on the bottoms of their feet. This occurs because either they have been forced to use unsuitable perches, or simply because of periods of inactivity, during which time they are taking excessive weight on their feet. If weight is consistently taken by certain parts of the foot, the blood supply to these areas is compromised, leading to a reduction in the local skin defense system, such that bacteria which are living naturally on the skin, may penetrate these defences and enter the foot. Once the tissues are affected, they tend to swell, making this area of the foot even more prominent, and hence more likely to bear weight when the bird is standing, hence the blood supply to that area is further compromised. As bacteria enter the tissue of the foot, any attempt by the foot to effect a cure, is minimised by the lack of blood. In time bacteria pass deeper into the tissues of the foot causing infection of and damage to deeper structures resulting in severe and crippling bumblefoot.
Within 35 days of initial trauma, it has been shown that a scar tissue surgery, following bacterial sensitivity testing and antibiotics. If surgery has to be performed this should be done at an early stage, whilst the infective material can still be excised cleanly and before the infection has entered the tendons or bones.
In Stage IV, the deeper structures of the foot are affected, and the outlook has traditionally been serious, whilst in Stage V the bone is infected and previously such cases have been considered to be hopeless, with euthanasia being advised.
At the recent 3rd International Raptor Biomedicine Conference held in South Africa, David Remple from Dubai and Neil Forbes from England, presented their findings following a research project using a new technique in the treatment of persistent infections, which have so often previously been the problem with bumblefoot therapy. Remple and Forbes (1998) described the use of antibiotic impregnated bone cement beads in the treatment of bumblefoot. By this method increased local concentrations of antibiotic can be achieved than with injections or tablets administration without relying on blood supply, which is often impaired in such cases. Furthermore drugs which could not normally be used by injection or tablet, (in view of their potential toxic effects) may be safely administered in this local form.
Source: http://falconers.com/bumblefoot
#27 | RE: Birds of Prey Anatomy & Physiology Sun Nov 24, 2013 1:29 pm
All birds have apteria, which are places on their bodies where no feathers grow. These places are covered up by feathers growing in adjacent areas. Noticeable apteria occur on the side of the neck, wingpits, and down the middle of the front of their body.
Bill is the official word for all bird "beaks." Beak is normally used to refer to a sharp or pointy bill (you wouldn't say a duck has a "beak" but you would say a robin has a beak.)
Branching happens just before owlets start learning to fly (fledging), and is when they start to move out from the nest and stand on adjacent branches.
Only female owls develop a brood patch. Many of the belly feathers fall out just before the eggs are laid creating this bare patch of skin to provide easy heat transfer to the eggs during incubation. Male owls do not develop a brood patch so are thought not to be capable of true incubation like in hawks, eagles, and falcons.
Brooding is not the same as inclubation. Brooding is the act of keeping the chicks warm by covering them with feathers. Incubation refers to pressing the brood patch against eggs.
Casting a pellet or throwing up a pellet is normally done once a day by Great Horned Owls. The pellets come out of the mouth covered with mucous and they consist of the fur and bones from their previous meal. Other birds also cast pellets (hawks, eagles, falcons, kingfishers, crows, etc.), but owl pellets are different in that they contain bones (owls can't digest bones well.)
A crop is a food storage pouch located before the stomach. It is found in diurnal birds of prey, but not in owls.
A clutch is a full set of eggs laid by a bird. If eggs are removed, sometimes a bird will double clutch (lay another set of eggs.)
The cloaca or vent is the one and only "out door." It's where the poop, urates, eggs, sperm, and everything else comes out. Copulation is sometimes called the cloacal kiss because the male has to wrap his tail around the female's so their cloacae (plural) can touch and the sperm can be transferred.
Copulation or mating are proper terms for the transfer of sperm from the male to female, but bonding is not a proper term. It's OK to have fun and say "tea time" also, since it certainly sounds like that. Rusty lands on Iris' back to copulate and he is the one that emits the high-pitched squealing sound (a screaming chitter.)
Crepuscular means most active at dawn and dusk. Great Horned Owls aren't strictly nocturnal (active at night), they are generally more crepuscular.
The egg tooth is the little white projection on the top of the bill of a hatching/just hatched bird. The egg tooth falls off a young Great Horned Owl around a week after hatching.
Feaking is wiping the bill on a branch or perch after eating to get the food bits off the bill.
When feathers grow in, they develop and eventually emerge from a feather sheath. The sheaths eventually break up and as the feathers emerge. The shafts of the feathers are filled with blood at this time to provide nutrition for the growing feathers. When feathers are primarily still in their sheaths they are called pin feathers.
Feather tracts are the places where feathers grow on a bird's body. Feathers do not grow everywhere on their bodies, leaving unfeathered areas called apteria.
Fledging is when young owlets are beginning to fly. It takes practice, so this process takes time and they are very vunerable.
GHO is a common abbreviation for Great Horned Owl. The technical and proper scientific abbreviation is GHOW.
Gular fluttering or panting are the terms for when an owl opens its mouth and puffs its throat in and out to cool off when hot or stressed.
Hacking is the term that describes releasing a raptor to the wild while still offering food. Our owlets will be "soft hacked," which means I will simply open the door to the outside world and continue to provide food as long as they want to come back and mooch.
Imprinting is the process of a bird developing its identity when its eyes are first focusing. Normally a bird imprints on its parents or siblings. If raised by humans, they imprint on humans, but retain their natural instincts. They use normal behaviors for their species, but directed toward humans most of the time. Some birds of soft imprints, that only kind-of think they are humans. The other extreme is sexual imprints who want to mate with humans (like Alice.) Rusty and Iris are not imprinted on humans.
Incubation is the act of keeping the eggs warm enough for the embryos to develop into chicks. In Great Horned Owls incubation is only done by the females, as males do not develop brood patches.
Mews is the falconry term for an enclosure for a raptor. I usually don't use this term since most people don't know it. I normally opt for pen, aviary, or enclosure. Sometimes I slip up and say "cage", but this is a word that isn't often used in this context.
Molting is replacing feathers each years. In owls, this happens in the spring through fall. In Great Horned and other large owls, not all of the flight feathers (wing and tail feathers) are replaced each year. It may take 3-4 years for all flight feathers to be replaced in a Great Horned Owl.
Mute is the technical term for poop or pooping, but "poop" is a comfortable word for most people to use also. Slice or slicing refers to the poop or the act of pooping by raptors that squirt their poop way out behind them, like hawks and eagles. Falcons and owls poop essentially straight down and don't slice.
The nictitating membrane is also referred to as the third eyelid. It is a milky blue (in Great Horned Owls) translucent membrane that blinks separately from the regular eyelids. It protects and moistens the eye. You may see it when Iris is feeding the owlets or when the owls are eating.
Owlet is the term for a young owl. Owlets can be nestlings (young ones in the nest) or fledglings (ready to leave the nest or having recently left the nest and are learning to fly.) A juvenile is a young owl that hasn't reached adult plumage.
A pip is the first hole a hatching bird pokes in the shell of the egg.
Preening is the act of running the feathers through the bill to maintain them. Sometimes the bird will first get oil from its uropygial gland and smear the oil onto its feathers. The oil basically waterproofs the feathers, and when sunlight strikes the oil on the feathers, the oil is converted to Vitamin D, which the birds ingest the next time they preen.
Primary feathers are the longest and outermost feathers on the wing and attach to the bird's "hand." They are numbered from the inside out, so the leading primary is P10, and the innermost one is P1.
Rictal bristles are modified feathers densely packed around the bill (beak). They look hair-like and function like mouse whiskers by being very sensitive to touch. When an owl is doing something close-up (like eating, feeding a chick, etc.), it closes its eyes (they are far-sighted and don't see well up close) and just goes by feel thanks to the rictal bristles.
Rousing is the term that describes lifting all the feathers then shaking them like a dog, usually finishing with a head shake. This is only done when the bird is comfortable.
Owls have sclerotic rings in their eyes like all birds and reptiles. This is a ring of bones that is inside the outer membrane of the eye. In owls the sclerotic rings are very pronounced, making the eyes somewhat tubular. The skulls of hawks and owls look very similar, but the pronounced sclerotic rings in owls make the eyes face forward and actually give shape to the face. If you look into the ear of an owl, you see the side of the eyeball and the sclerotic ring is just below the outer membrane covering the eye.
Secondary feathers are the feathers on the wing closest to the bird's body, and they attach to the ulna in the forearm of the bird. The number of secondaries varies by species, and the are numbered from S1 as the outermost secondary (next to P1) to the innermost secondary, next to the body.
Talons are the claws on the ends of each toes (four on each foot.) They are the equivalent of toenails and grow continuously, self-sharpening as they get worn and dulled.
The uropygial gland is also called the oil gland. It is located at the base of the tail on top, where the tail attaches to the body. The oil from the gland is smeared onto the feathers with the bill and tongue during preening.
Source: http://www.internationalowlcenter.org
#28 | RE: Birds of Prey Anatomy & Physiology Mon Dec 23, 2013 2:46 pm
Birds have belly buttons too!!
http://mag.audubon.org/articles/birds/qu...e-belly-buttons
#29 | RE: Birds of Prey Anatomy & Physiology Fri Jan 10, 2014 5:38 pm
One of the mods at OKC posted this link while I was lurking.
http://www.inquisitr.com/885704/baby-owl-rem-sleep-study/
#30 | RE: Birds of Prey Anatomy & Physiology Tue Jan 14, 2014 8:47 pm (Last edited: Tue Jan 14, 2014 9:00 pm)
I "borrowed" this from one of the mods at the SW FL eagle nest. When you open it, be sure to scroll on down.
SCluvineagles has attached files to this post
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raptor anatomy and physiology.pdf
#31 | RE: Birds of Prey Anatomy & Physiology Wed Jan 22, 2014 3:41 pm
Location: HappyTrails
SCluvineagles came across this picture today. Because SC was working, she asked me to post this in our educational forum. It shows a great comparison of some of the wonderful raptors out there. Big or small, they're ALL great hunting tools!
Hiker has attached images to this post
talon sizes.PNG
The human spirit needs places where nature has not been rearranged by the hand of man. ~~ Author Unknown
#32 | RE: Birds of Prey Anatomy & Physiology Wed Feb 05, 2014 7:50 am
Grandad Rufus shared this link on Barred Owl feathers.
http://www.fws.gov/lab/featheratlas/feat...BDOW_wing_adult
#33 | RE: Birds of Prey Anatomy & Physiology Thu Feb 06, 2014 8:35 am
I learn a lot from Grandad Rufus. He explains complex things in a way that's easy to understand. Thanks GDR!
8:20 Grandad_Rufus: It is interesting to note that a bird's voice does not originate in the larynx as ours does.
8:20 Grandad_Rufus: Birds have a larynx, but, unlike ours it has no vocal chords. It is used primarily to regulate the amount of air coming into the trachea.
8:21 Grandad_Rufus: Bird sounds are produced in an organ unique to birds called the syrinx. For most birds, the syrinx is located where the trachea joins the bronchi.
8:21 Grandad_Rufus: Some birds including certain species of owls have two syringes located in the bronchi.
8:21 Grandad_Rufus: However, where the syrinx is located doesn't seem to matter, for the real sound producers are the muscles that surround the syringeal membranes.
8:21 Grandad_Rufus: As air passes over these membranes they begin to vibrate, and while they are vibrating, the surrounding muscles apply controlled tension which results in sounds of varying pitches
8:21 Grandad_Rufus: much like a violinist applying pressure to the vibrating strings of his instrument to create different notes.
#34 | RE: Birds of Prey Anatomy & Physiology Thu Feb 06, 2014 8:55 pm
Kind of like Coverts....
"The longer I live, the more beautiful life becomes...if you invest in beauty, it will remain with you all the days of your life." Frank Lloyd Wright
#35 | RE: Birds of Prey Anatomy & Physiology Fri Mar 28, 2014 8:56 pm
This is an old article I just ran across and thought I'd share. Pretty amazing!
Dentist builds new beak for bald eagle
eagle.PNG - Bild entfernt (keine Rechte)
A dentist in Alaska used materials used for human teeth – and a yellow highlighter – to repair a bald eagle's broken beak.
By: Lesley Ciarula Taylor Staff Reporter, Published on Tue Feb 23 2010
Dentist Kirk Johnson started off with a custom impression on his patient, who could die without dental surgery. The patient watched him, wary, talons just inches from his face.
Attached to those talons was Cyrano, a bald eagle missing a chunk of beak. He'd been brought in wet, lice-ridden and gravely injured to the Bird Treatment and Learning Center in Anchorage, Alaska.
"Alaska is kind of a small town," Johnson told the Star in an interview. "People had heard that we do a lot of things dentally."
Cindy Palmatier, executive director of the centre, hadn't initially told Johnson the patient was a bald eagle with a six-foot wingspan and talons as thick as a man's finger.
"He's a cool bird," she said of Cyrano, although Johnson, with a cosmetic dental practice as well as a regular practice, is fairly hip himself.
Palmatier and her team had tried some literal kitchen-table surgery at first to mend the bird's broken beak, apparently damaged by fishing wire. It didn't take and the risk was growing Cyrano would lose his vital hunting apparatus entirely. They took the problem to Johnson.
"I needed to find something strong, easy to repair, non-toxic and lightweight," said Johnson. As for any patient, he started with a mould. And Cyrano couldn't be sedated for the procedure.
"The bird looked at me and seemed to be saying, 'I won't hurt you if you don't hurt me'."
A replica of Cyrano's problem in hand, Johnson scoured journals and articles for a solution. "I woke up in the middle of the night and said, 'Okay, I get it. This is just a custom thing we do every day for people's smiles. It's just a lot larger and a different shape and a different colour."
Using standard human tooth-building materials, Johnson built Cyrano a new beak. Using "the Alaskan spirit" of resourcefulness, he used blue sticking putty ("non-toxic, easy to remove") to keep it in place and a yellow highlighter to match it to the rest of the beak.
Throughout the hour-long procedure in December, Cyrano just watched. "My hands were literally in the bird's mouth and I'm inches from his eyes. I think we have a mutual respect."
Cyrano, a young male at 6 or 7 years old, will live out his life at the centre and is back eating fish with gusto, Palmatier said.
Do you ever wonder just how big an Eagle talon is? Researchers believe a bald eagle's grasp is at least 10 times stronger than that of an adult human hand and can exert upwards of 400 psi.
Talons.PNG - Bild entfernt (keine Rechte)
#37 | RE: Birds of Prey Anatomy & Physiology Thu Apr 17, 2014 2:17 pm
In this sequence from Illustra Media's newest documentary FLIGHT: THE GENIUS OF BIRDS you will enter a fertilized egg to witness a bird's embryonic development. Spectacular animation and live action footage document the extraordinary 21-day process of organization and growth from a few cells into a chicken.
You find the coolest video's patti!! That was "absolutely incredible"!!
#39 | RE: Birds of Prey Anatomy & Physiology Thu May 01, 2014 9:29 am
This is a good article on owls and delayed incubation.
http://www.godsownclay.com/TawnyOwls/Art...dincubatio.html
#40 | RE: Birds of Prey Anatomy & Physiology Mon Nov 03, 2014 8:44 pm
Published on Oct 29, 2014 by Epic Montana
Montana is home to 15 of North America's owl species. This short film from Distill Productions uses incredible, never-before-seen footage of Big Sky owls in action and fascinating interviews with biologists to illuminate these beautiful, secretive birds of prey.
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