Proceedings of the Boston Society of Natural History, Volúmenes 41-42

absent absent abundant adult males appears Arctic Terns average behavior bendirei benti Bicknell's thrush bill Biol Boreal breeding birds breeding range brooding brown brownish Calif caudal characters chicks coast Coll collected color Common Terns County culmen dorsal early eastern eggs examined feathers feeding female fish flight flock frag gray-cheeked thrush Hartert hatching holotype Hylocichla incubating bird incubation intermediate July June June 11 juvenal leucoptera Loxia curvirostra Mansfield mate measurements migration minor mountains Museum neogaa nest Newfoundland North observed occur olive olive-back ornithologists pair Parrot Crossbill plumage Poey probably pusilla race records Red Crossbill region remiges Ridgway scarlet Seal Island seen Sept singing sitkensis smaller form song southern species specimens stricklandi subspecies summer ternery tion total length typical curvirostra U. S. Nat vagrant variation veery vocal sac White-winged Crossbill wing length winter Worcester young Zoöl