A bird feeder comprising a seed container (16), a center tube (26) formed within the seed container (16), a seed tray (64), an independently calibrated cartridge spring assembly (103) having a center rod (108), a spring (118) extending about the center rod (108) with the center rod (108) extending downwardly of said center tube (26), a cover (10), and a hanger (52, 53) engaged with an upper portion of the center tube (26) to thereby retain the cover (10) in position, a shroud (18) having a perch member (102) and a central opening therein to permit the lower end of the center rod (108) to pass therethrough, and a retainer (124) secured to the lower end of the spring assembly (103).
