Birds of Brasil and South America

Arthur Grosset's Birds - Photos and notes about South American Birds
Xeno-Canto: Bird songs from tropical America
Centro de Estudos Ornitológicos
Birding Peru - All about birding in Peru


Birds of North America, Europe etc.

Birdpix - Excellent dutch photo site


Organizations

South American Classification Committee of AOU
The American Ornithologist' Union (AOU)
Neotropical Bird Club
Aquasis - Site com muitas informações sobre a biodiversidade do Ceará


General Info and Literature

BirdGuides - "better birding through technology"
Buteobooks - Good U.S. bookshop, specializing in Ornithology
Fatbirder - Birding web portal, with thousands of links
Searchable Ornithological Research Archive SORA
BIOONE - Aggregation of many bioscience journals (free abstracts)


Birding Tours

Birding in Northeastern Brazil - Site of Brazilian bird guide Ciro Albano
Avesfoto - Birding Tours - Site of Brazilian bird guide Edson Endrigo
Kolibri Expeditions - Bird watching tours in Peru and South America