Knowledge is power and in photography, knowledge is better photographs! This is really a no-brainer Cornell Lab of Ornithology Birds of the World is an online, subscription database to lieterally ALL the birds of the world! I’m not talkin about just IDing this or that species, I’m talking volumes upon volumes of biological information from where to find them, weight of an egg, world range and population, threats, everything! There is so much information at this site you could write a book from the information to accompany YOUR photographs! Really, check it out and sign up for a month and when you get hooked, go for the year knowing your funds support this incredibly important resource and all the science being conducted to present it!