BLUE JAY The Texas Breeding Bird Atlas

San Antonio's blue jay birds have a bold color and a brash bird call to match their attitude

Survey designs and statistical methods for the estimation of avian population trends - Documents - USFWS National Digital Library

This Wonder Bird Flies Thousands of Miles, Non-Stop, as Part of an Epic Migration, Science

Most Common Birds of Vermont (with Pictures)

Big Bend Bird Studies (U.S. National Park Service)

Blue Jay - eBird

IBP - the MAPS Program

Great places to go bird-watching in Texas

The Jays of Texas Gulf Coast Bird Observatory