The invention comprises a structure that affixes over the entrance hole of an avian cavity nest and serves to discriminate between prospective nesting birds by virtue of having the entry diverted to a vertical entranceway with the access on the lower end. The prospective bird must pass up through the structure to gain access to the entrance hole of the nest cavity.

An improved nesting box for migratory waterfowl, especially for wood ducks, made of durable white plastic in a sleek, smooth and round canister shape. This wood duck house with round contours and a tight fitting lid deters predators from entry as there are no edges or ridges for predators to grasp. The ingress and egress hole is of sufficient size to allow a wood duck in flight to easily alight into the inside nesting area. The ingress hole is of sufficient length from the bottom of the canister to be longer then the reach of any predator. The invention provides a mesh grid climbing ladder secured to the inside bottom and side of the canister for easy egress by the ducklings upon hatching. This wood duck house is not to be mounted on a tree. An additional improvement over the prior art is that this invention is mounted on a round plastic hollow pole and planted directly in the water of a wetlands area thereby allowing the ducklings to exit the canister and jump safely to the water below. The wide diameter of the pole makes it extremely difficult for predators to grasp and climb. The pole is sealed at both ends thus preventing water seepage and cracking from expanding ice when planted in a cold climate pond. The pole can also be planted in a shoreline area inside a second segment cylinder, of slightly larger diameter, and featuring inside stabilizing collars.

The invention relates to a punched out sheet for use in making a bird-nesting box without using tools or other aids and to a bird nesting box made from the same. The sheet has an interconnected outer part and an inner punch-out part. The outersheet has a carrier handle and devices for adjustment and reinforcement of the entrance and exit hole of the box. The inner part has bipartite suspension devices, a surface device in the form of a ladder and a transverse device in the form of a guard against predators.

A bird feeder comprising an outer enclosure having one or more access ports to the interior of the enclosure and an insert mounted for telescoping movement into the interior of the outer enclosure. The insert is formed with at least one compartment for storing feed with one or more openings into the insert adapted to permit access to the compartment. The insert is dimensioned to define a collection space between the outer enclosure and the insert when the insert is telescoped into the interior of the outer member. The collection space accumulates feed spilled from the compartment by feeding birds to prevent wastage. The insert is movable between a first raised position in which the openings in the insert generally align with the access ports of the outer enclosure to permit feeding by birds, and a second lowered position in which the compartment of the insert is positioned to automatically receive spilled feed from the collection space.