Patent ID: 8485130

Claim:
A bird feeder comprising: a seed tube having an open top and an open bottom, at least one seed access opening in a side wall of said seed tube; a cover fitting on top of said seed tube to cover said open top; a base portion removably secured to said side wall and covering said open bottom; a removable seed port structure mounted in said at least one seed access opening, said seed port structure comprising a frame member extending about said feed opening, an inner baffle wall extending inwardly of said seed tube, said inwardly extending baffle wall having a pair of protrusions thereon, an outer baffle wall extending exteriorly of said seed opening, said seed access opening being defined by a generally circular edge wall, a first pair of diametrically opposed recesses formed in said edge wall, said first pair of recesses being sized to permit said protrusions on said baffle wall to pass therethrough, a second set of recesses formed in said edge wall, said second set of recesses being diametrically opposed and being sized smaller than said first set of recesses; and the arrangement being such that said seed port structure can be secured to said seed tube by passing said pair of protrusions through said first set of recesses and rotating said seed port structure such that said pair of protrusions sit proximate said second set of recesses.