Between June 3 and August 22, 1962, I spent a total of 58 days in the southeast arm of Yellowstone Lake in observing the breeding behavior of the pelicans on the Molly Islands. The birds were watched from a canoe anchored near the colonies. In addition, I visited pelicans at their feeding and loafing areas away from the breeding grounds on 11 days. Project Number 118.
Schaller, George B.
"The Breeding Behavior of the White Pelican,"
Jackson Hole Research Station Annual Report: Vol. 1962
, Article 28.
Available at: https://repository.uwyo.edu/jhrs_reports/vol1962/iss1/28