OLLÉ A. &  MONTRÀS-JANER T. 2020. Identification of second and third plumages in Short-toed Snake Eagle. www.raptoridentification.com Short-toed Snake Eagle […]

OLLÉ A. &  MONTRÀS-JANER T. 2020. How to sex Eurasian Hobby in juvenile and transitional plumage. www.raptoridentification.com Adult birds are […]