Proceedings of the Boston Society of Natural History, Volumen 42

adult alarm appears April Arctic Terns arrive Baffin Island Beach begging behavior Bird-Banding birds Blue and Lesser Blue and Snow Blue Geese Blue Goose breeding cycle breeding grounds caerulescens Cape cent chicks coast Common Terns copulate courtship eggs feeding female fish flight Foxe Basin grass Gresham Gulls hatching Hudson Bay incubating James Bay juvenals ke-arr Koukdjuak River Lake large numbers Laridae late latter Lesser Snow Geese Louisiana male Manitoba Marples marshes mate McIlhenny miles Mississippi nesting grounds nesting material noted numbers O. L. Austin observed occur Ontario pair parents peck period Plate plumage posturing preening reaction records Refuge reported River Roseate Terns sand Sandwich Tern scrape-making season seen Snow Goose social Southampton Island southern species spring migration Sterna stimulated Sugarloaf Island tern colony ternery territory Tinbergen tion tundra Upper Sugarloaf Island usually Wilson Bull wings Winnipeg wintering grounds young