Abstract: The present invention is for a stackable modular bird feeder module that when the modules are stacked, provides a tube type bird feeder. The basic module has a sidewall with a top rim and a bottom rim. The top rim and the bottom rims are configured such that when the modules are stacked the bottom rim of one unit will engage the top rim of a unit below. The feed sidewall of the units has ports and associated perches which allow the birds to feed. A base attaches to the sidewall and provides a central cavity. A passage in the base is provided to pass feed to the module below and a baffle is attached to the base prevents overflow of the feed through the ports.

Abstract: The present invention is for bird feeders which are resistent to invasion by squirrels, pigeons and other large birds. The feeder has a hopper with a sloped sidewall to which a feed tray attaches. The angle .phi. between the sidewall and the feed tray is greater than about 60.degree. and less than 70.degree.. The separation of the perches on which the birds rest from the sidewall of the hopper is between about 3/4" and 13/4". The feeder has a roof which covers the hopper and preferably forms a convex cover.