Catastrophic collapse of Indian white-backed Gyps bengalensis and long-billed Gyps indicus vulture populations
作者： V. Prakash , D.J. Pain , A.A. Cunningham , P.F. Donald , N. Prakash
DOI: 10.1016/S0006-3207(02)00164-7
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摘要: … vultures found were scanned at 10-min intervals for at least half an hour to assess the proportion of birds exhibiting “neck… identified, the age structure of vulture populations was assessed…
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