Bird feeder
BACKGROUND OF THE INVENTION 
     The present invention is a novel bird feeder. Bird feeders in the prior art are of many different designs; post mounted, cantilevered from a window sill and hung from a bracket or tree. The materials include wood, glass and plastic. Most designs hold several days supply of feed. Large heavy feeders are generally post mounted. More common are lightweight feeders that can be mounted or hung by a variety of means. 
     Included in the prior art is a tubular bird feeder with multiple openings at various heights. As the level of the feed drops only the lower perches are useful for feeding. Some designs specifically favor small songbirds while others permit both small and large birds. Feeder perches are disclosed in design patents DES No. 265,938 and DES No. 278,088 to Kilham, the latter discourages large birds by extending probes outward from the feed chamber just above the perch. 
     While the prior art includes bird feeders in a variety of designs it is apparent that there is need for a light weight, low cost, easily assembled and readily refilled bird feeder that can be made for small birds only or for both small and large birds, and which protects the feed from squirrels and other animals. 
     SUMMARY OF THE INVENTION 
     The present invention is a bird feeder. More specifically it is a bird feeder which utilizes a necked container, such as a glass or plastic bottle, e.g. a soda or soft drink bottle, to hold a supply of feed. The feed container is an inverted container having a neck with a male closure-engaging mechanism, such as a screw neck or snap fitting, removably attachable to an annular connecting member having a complimentary female mechanism adapted to secure and hold the male closure-engaging mechanism of the feed container. The annular connecting member is attached to the upper end of a conduit, tube or other suitable passageway to form a continuation thereof, and the lower end of the conduit is attached to a cup that holds the feed in a manner which permits the birds to feed. In the present embodiment the conduit is glued to the center of the inside bottom of the cup. As feed is removed from the cup it is replenished by a gravity flow of feed from the container, through the conduit, passing through openings or ports proximate the lower end of the conduit into the cup. If desired, a protective device such as a hood or shield extends outward from the connecting member or conduit, spaced above the cup, to prevent or retard rain, snow and airborne contaminants from entering the cup. If desired the cup bottom may have holes or other devices to allow water, if it enters the cup, to flow out of the cup while retaining the feed. A perch attached to the cup, outwardly and downwardly positioned therefrom, permits birds to alight for feeding. Further if desired, a hanging device, such as a hook or a screweye, passes through or is attached to the bottom of the container to allow the feeder to be hung up. 
     In order to utilize containers with varying neck sizes and or closure means, an adaptor or reducing device can be inserted between the container neck and the connecting member which fixes the container to the remainder of the assembly. For example, if the connecting member is made to receive a 3 liter soft drink bottle neck, the adapter can be designed so that a 2 or 1 liter size soft drink bottle can be employed as the feed container. 
     It is an object of the present invention to provide a novel bird feeder. 
     It is a further object of the present invention to provide a bird feeder that can utilize as the feed container, a previously used container or bottle such as a plastic soda or soft drink bottle. 
     Yet another object of the present invention is to provide a bird feeder that can utilize various sizes of feed containers, for example one and two liter plastic or glass bottles. 
     It is also an object of the present invention to provide a bird feeder having a perch for small birds only. 
     Another object is to provide a bird feeder with a omi-positional perch for both small and large birds. 
     Yet another object is to provide a bird feeder that shields the feed from contaminants and the elements. 
     It is an object of the present invention to provide a bird feeder that is easily assembled, readily refilled, attractive in appearance and low in cost. 
     The foregoing and other features and advantages of the present invention will become apparent to those skilled in the art from a consideration of the drawings, from the detailed description and from the preferred embodiment which is disclosed hereinafter. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a view of the assembled bird feeder of the present invention. 
     FIG. 2 is an exploded view of the bird feeder. 
     FIG. 3 is a view of a screw thread reducing device which can be inserted between the container neck and the connecting member to adjust for varying container neck sizes. 
     FIG. 4 is a representation of an alternative perch arrangement. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring first to FIGS. 1 and 2, wherein the assembled preferred embodiment of the invention is shown, a necked feed container 10 is partially filled with bird seed 12. Hook or hanger 14 is fastened to the bottom 15 of the container and a complimentary hanging or securing device 16 loops through the hanger 14 to suspend the feeder from a bracket or a tree branch. A male closure-engaging mechanism 18 for the container which may be an externally-threaded neck portion on the container, is removably attached to an annular connecting member 20 which has a female mechanism 21 such as an internally-threaded sleeve adapted to secure and hold the male closure-engaging mechanism. A conduit 24 is attached at its upper end to annular connecting member 20, and may be integrally molded therewith or may be secured by glueing. A protecting cover 22 in the preferred embodiment is a shield or hood which flares outwardly and downwardly from annular connecting member 20. Conduit 24 connects to a feed cup 26 at its lower end and may be adhesively secured, integrally molded, or otherwise fastened. The feed flows down the conduit 24 and out through openings or ports, not shown in FIG. 1, to replenish the feed in cup 26 as birds remove feed from the cup. Attached to cup 26 is a perch 28 on which birds alight and stand while feeding. 
     Now referring to FIG. 2 an exploded view of the preferred embodiment, conduit 24 is shown in more detail, with openings or dispensing ports 27 and 27&#39; at its lower end through which the feed can flow freely into the cup 26. Also shown more clearly is perch 28, which in this embodiment is circular, but can be of any reasonable shape attached to cup 26 by crossbar 29. While in FIG. 2 the protecting cover 22 and the conduit 24 are shown as two distinct pieces, a single molding or other manufacture of a combination of the conduit and the protecting cover is another embodiment not shown. This is true of the entire assembly, except for the detachable feed container, for the number of distinct pieces is not critical so long as the resultant assembly provides the functions enumerated. 
     FIG. 3 shows an annular adaptor 30 which, if desired, is removably insertable into annular connecting member 20 to effectively reduce the size of the annulus of the connecting member. Use of the adapter 30 allows the use of feed containers with varying size necks or having varying closure engaging devices. The annular adaptor 30 has an external engaging device 31, such as external threads, adapted to fit into and secure with the complementary female engaging device 21 of the connecting member 20, and internal engaging device 32 such as internal threads in turn adapted to secure and hold the complementary male closure-engaging device 18. 
     FIG. 4 is an alternative perch arrangement which can replace the perch 28 in FIGS. 1 and 2. As in FIGS. 1 and 2 the perch is attached to the cup 26, for example by glueing or snapping into a complementary recess molded into the bottom of the cup. As shown in FIG. 4 the alternative perch comprises two horizontal perching areas, the first, for example ring 40, being spaced both horizontally and vertically more remote from the cup than the second, for example ring 41. The two perching areas allow larger birds to eat using the first perching area, while small birds find the second area more accommodating since it allows them to comfortably stand and feed. The perch areas are joined to the cup by suitable supports, for example arched rib 42. In the embodiment shown, further rigidity is provided by additional crossmember 43. 
     While the bird feeder of the present invention has been shown and fully and completely described in the preferred embodiment above, it will be obvious to one of skill in the art that a number of changes could be made without departing from the true spirit and scope of the present invention. Accordingly, all modifications, alterations, changes and the like, which fall within the spirit and scope for the invention as set forth in the appended claims are included herein.