[CT Birds] Sibley Quiz on Estimating Numbers

Frank Mantlik mantlik at sbcglobal.net
Wed Aug 15 22:28:42 EDT 2012

Estimating numbers of birds in a flock accurately is a true art, and takes much 
experience and practice.  As an exercise in this pursuit, please go to David 
Sibley's Quiz:


One can practice further on one's own by scattering lentils, coffee beans, etc. 
on a table and guessing the total.

Frank Mantlik

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