[1] HawkWatch Int, 2240 South 900 East, Salt Lake City, UT 84106 USA
[2] Univ Utah, Sch Biol Sci, 257 South 1400 East, Salt Lake City, UT 84112 USA
[3] Smithsonian Conservat Biol Inst, Migratory Bird Ctr, Natl Zool Pk,MRC 5503, Washington, DC 20013 USA
[4] Ctr Ecol Evolut & Environm Changes CE3C, Azorean Biodivers Grp, Rua Capita Joao dAvila, P-9700042 Terceira, Acores, Portugal
[5] Univ Acores, Fac Agr & Environm, Rua Capita Joao dAvila, P-9700042 Terceira, Acores, Portugal
[6] Univ Helsinki, Helsinki Lab Ornithol, Finnish Museum Nat Hist, FI-00014 Helsinki, Finland
[7] Univ Cape Town, DST NRF Ctr Excellence, FitzPatrick Inst African Ornithol, Cape Town, South Africa
[8] Addis Ababa Univ, Fac Nat Sci, Dept Zool Sci, Addis Ababa, Ethiopia
[9] Ethiopian Wildlife Conservat Author, Addis Ababa, Ethiopia
[10] Box 18112, Addis Ababa, Ethiopia
[11] Hawk Mt Sanctuary, Acopian Ctr Conservat Learning, 410 Summer Valley Rd, Orwigsburg, PA 17961 USA
[12] Peregrine Fund, 5668 West Flying Hawk Lane, Boise, ID 83709 USA
[13] Wageningen Univ & Res, Droevendaalsesteeg 3A, NL-6708 PB Wageningen, Netherlands
[14] 116 Village Dr, Blandon, PA 19510 USA
[15] Kotebe Metropolitan Univ, Addis Ababa, Ethiopia
[16] Natl Museums Kenya, Ornithol Sect, POB 40658-00100, Nairobi, Kenya
[17] Georgetown Univ, Dept Biol, 37th & O St NW, Washington, DC 20057 USA
[18] Georgetown Univ, McCourt Sch Publ Policy, 37th & O St NW, Washington, DC 20057 USA
[19] 2 Rue Riviere, F-10220 Rouilly Sacey, France
[20] Max Planck Inst Anim Behav, Dept Migrat, D-78315 Radolfzell am Bodensee, Germany
[21] Univ Konstanz, Ctr Adv Study Collect Behav, D-78457 Constance, Germany
[22] Univ Utah, Dept Anthropol, 26o Cent Campus Dr, Salt Lake City, UT 84112 USA
[23] Univ Utah, Archaeol Ctr, 260 Cent Campus Dr, Salt Lake City, UT 84112 USA
[24] Koc Univ, Dept Mol Biol & Genet, Istanbul, Turkey
[25] Kuzey Doga Dernegi, Ortakapi Mah Sehit Yusuf Bey Cad 69 Kat 1, TR-36100 Kars, Turkey