systematics, population biology & conservation
University of North Texas, Dept of Biological Sciences
University of North Texas, Institute of Applied Sciences
High Arctic Institute
The Peregrine Fund
Global Raptor Information Network (GRIN)
BIRDNET
The Complete Works of Charles Darwin - Online
Longevity and Life History database
Regreso a la Madriguera from Cerebro Producciones on Vimeo.