Yellow Headed Blackbird. April 18, 2008. Wikapedia, May 15, 2008. http://en.wikipedia.org/wiki/Yellow-headed_Blackbird
Twedt, D. J., and R. D. Crawford. 1995. Yellow-headed Blackbird (Xanthocephalus xanthocephalus). In The Birds of North America, No. 192 (A. Poole and F. Gill, eds.). The Academy of Natural Sciences, Philadelphia, PA, and The American Ornithologists' Union, Washington, D.C.
Yellow Headed Blackbird. May 17, 2008. http://www.birdwatchersdigest.com/site/images/bird_id/yellow_headed_blackbird.jpg
Typha. May 22, 2008. Wikapedia, May 16, 2008. http://en.wikipedia.org/wiki/Typha
Common Cattail. May21, 2008. http://static.howstuffworks.com/gif/common-cattail-1.jpg
No comments:
Post a Comment