190. Farmer, C.J., K. Safi, D.R. Barber, I. Newton, M. Martell, and K.L. Bildstein. 2010. Efficacy of Migration counts for monitoring continental populations of raptors: an example using the osprey (Pandion haliaetus). The Auk 127(3): 863-870.
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190. Farmer, C.J., K. Safi, D.R. Barber, I. Newton, M. Martell, and K.L. Bildstein. 2010. Efficacy of Migration counts for monitoring continental populations of raptors: an example using the osprey (Pandion haliaetus). The Auk 127(3): 863-870.
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