Answers are grounded in this paper and cite their sources.
David L. Trauger, Alex Dzubin, John P. Ryder; White Geese Intermediate between Ross' Geese and Lesser Snow Geese, The Auk, Volume 88, Issue 4, 1 October 19
No takes yet. Share an insight, caveat, or question.
Trauger et al. (1971) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: