Resourceful websites

Good day, I didn't notice a thread like that and thought it would be nice to have others list webpges they find helpful, resourceful and which they use a lot. PLease feel free to add yours, maybe we can create a birdy compendium :)

http://www.earthsendangered.com/search-groups2_sB.html

http://www.endangeredspeciesinternational.org/birds6.html

http://www.scienceclarified.com/Bi-Ca/Birds.html