[obol] Why there is not a White-winged Petrel

From: Bob Archer <rabican1@xxxxxxxxx>
To: OBOL <obol@xxxxxxxxxxxxx>
Date: Thu, 8 Jul 2021 09:00:42 -0700

There are White-chinned, faced, headed and necked. But apparently black
wings give an advantage to seabirds.

https://royalsocietypublishing.org/doi/10.1098/rsif.2021.0236

Bob Archer

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» [obol] Why there is not a White-winged Petrel - Bob Archer