Sibley Birding: How Much Does Your Big Day Weigh? Or Birding with a Calculator

Authors

Bob Bushnell
Steve Davis

Creative Commons License

Terms of use for work posted in Scholar Commons.

Recommended Citation

Bushnell, Bob and Davis, Steve (2002) "Sibley Birding: How Much Does Your Big Day Weigh? Or Birding with a Calculator," Bird Observer: Vol. 30: Iss. 1, Article 7.
Available at: https://digitalcommons.usf.edu/bird_observer/vol30/iss1/7