EARLY PRE-MIGRATORY FLOCKING BEHAVIOR OF SWAINSON'S HAWKS (BUTEO SWAINSONI)

[1] [Anonymous], 1978, THESIS WASHINGTON ST

[2] BECHARD MJ, 1983, WILSON BULL, V95, P233

[3] Bechard MJ., 2020, Birds of the World, DOI DOI 10.2173/BOW.SWAHAW.01

[4] Bent A.C., 1937, U.S. National Museum Bulletin, V167, DOI DOI 10.5479/SI.03629236.167.I

[5] The impacts of climate change on the annual cycles of birds [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 2009, 364 (1534) : 3321 - 3330

[6] Coues E., 1878, B US GEOLOGICAL GEOG, V4, P545

[7] Fisher A.K., 1893, The hawks and owls of the United States and their relation to agriculture

[8] GRASSHOPPER CONSUMPTION AND SUMMER FLOCKS OF NONBREEDING SWAINSONS HAWKS [J]. CONDOR, 1987, 89 (03): : 676 - 678

[9] MIGRATION PATTERNS, USE OF STOPOVER AREAS, AND AUSTRAL SUMMER MOVEMENTS OF SWAINSON'S HAWKS [J]. CONDOR, 2011, 113 (01): : 89 - 106

[10] Climate variability and the timing of spring raptor migration in eastern North America [J]. JOURNAL OF AVIAN BIOLOGY, 2016, 47 (02) : 208 - 218

[1] [Anonymous], 1978, THESIS WASHINGTON ST

[2] BECHARD MJ, 1983, WILSON BULL, V95, P233

[3] Bechard MJ., 2020, Birds of the World, DOI DOI 10.2173/BOW.SWAHAW.01

[4] Bent A.C., 1937, U.S. National Museum Bulletin, V167, DOI DOI 10.5479/SI.03629236.167.I

[5] The impacts of climate change on the annual cycles of birds [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 2009, 364 (1534) : 3321 - 3330

[6] Coues E., 1878, B US GEOLOGICAL GEOG, V4, P545

[7] Fisher A.K., 1893, The hawks and owls of the United States and their relation to agriculture

[8] GRASSHOPPER CONSUMPTION AND SUMMER FLOCKS OF NONBREEDING SWAINSONS HAWKS [J]. CONDOR, 1987, 89 (03): : 676 - 678

[9] MIGRATION PATTERNS, USE OF STOPOVER AREAS, AND AUSTRAL SUMMER MOVEMENTS OF SWAINSON'S HAWKS [J]. CONDOR, 2011, 113 (01): : 89 - 106

[10] Climate variability and the timing of spring raptor migration in eastern North America [J]. JOURNAL OF AVIAN BIOLOGY, 2016, 47 (02) : 208 - 218