Socorro red-tailed hawk
The Socorro red-tailed hawk ("Buteo jamaicensis socorroensis") is a subspecies of red-tailed hawk endemic to Socorro Island, off the west coast of Mexico. The wing chord of males can range from , averaging , and, in females, it ranges from , averaging . Males and females average in tail length, in tarsal length and in culmen length. One female was found to have weighed . This race, which is physically fairly similar to the western red-tailed hawk ("B. j. calurus"), is not recognized by some authorities because it has a breeding population of perhaps fewer than 20 birds. There are some differences from "B. j. calurus", such as their larger, more robust feet (second only among all races to the Mexican Highlands red-tailed hawk, "B. j. hadropus") and much greater sexual dimorphism, which is the most pronounced of any race linearly, averaging 10.42% when all standard measurements are considered. Furthermore, Socorro hawks tend to average more melantic in overall color, being a duller, darker brown than mainland birds.
Q457471
red-tailed hawk
Concept
Q1361324
Socorro Island
LOC
Q1753079
wing chord
UNK
Q1059724
tarsal
Concept
Q31528
culmen
Concept
Q27606539
western red-tailed hawk
UNK
Q27606548
Mexican Highlands red-tailed hawk
Concept
Q181497
sexual dimorphism
Concept
Q89009192
Socorro red-tailed hawk
Concept
+20^^http://www.w3.org/2001/XMLSchema#decimal
20
NUMBER
+10.42^^http://www.w3.org/2001/XMLSchema#decimal
10.42
NUMBER
parent taxon