related to Distribution and habitat · 31Tree swallow → Alaska, Arctic Circle, Arizona, California, Canada, Central, Eastern, Eastern Mexico, Europe, Great Lakes, Greenland, Gulf Coast, It, Its, Kansas, New Mexico, North America, Pacific, Panama, Rocky Mountains
related to Breeding · 23Tree swallow → Additionally, After, Annapolis Valley, Cavity, Copulation, Denis, Dispersal, During, Entrance, He, Higher, However, In, It, Most, Natal, Nova Scotia, Saskatchewan, St, The
related to Taxonomy and etymology · 19Tree swallow → Amérique Septentrionale, Ancient Greek, By, Chilean, Elliott Coues, Greek, Hirundo, Histoire, In, Iridoprocne, It, Jean Cabanis, Latin, Louis Pierre Vieillot, Procne, Some, Tachycineta, The, Tumbes
related to Status · 16Tree swallow → Acidification, Canada, Conservation, Contamination, In, International Union, It, Migratory Bird Treaty Act, Migratory Birds Convention Act, Nature, North America, Other, PCBs, The, This, US
related to Feeding · 14Tree swallow → As, Crustaceans, During, In North America, Its, Linolenic, Long Island, Myrica, New York, Northern Hemisphere, Otherwise, The, This, When
related to Parasites · 14Tree swallow → Brueelia, Ceratophyllus, Hemialges, It, Myrsidea, Nestlings, Protocalliphora, Pteronyssoides, The, There, These, This, Trouessartia, Trypanosoma
related to Immunology · 13Tree swallow → Alaska, HIC, Higher, In, Instead, Ithaca, Lower, New York, Tennessee, The, These, This, Whether
related to Survival · 9Tree swallow → About, Individuals, Lifespan, Males, Most, Regardless, Telomere, The, Whether
related to Voice · 8Tree swallow → Communication, Increased, It, Noise, Parents, The, These, While
related to Predation · 6Tree swallow → American, Eggs, It, The, This, While
