Black text on white background. Transcribed text: Many birders use the term “jizz,” which is apparently derived from the military acronym G.I.S., for “General Impression and Shape.” David Allen Sibley Sibley's Birding Basics

Black text on white background. Transcribed text: These same clues can be described in words, and a birder should make every effort to do so rather than saying simply, “it had the right jizz.” David Allen Sibley Sibley's Birding Basics

I will actually not be using this term…

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