During the winter of 1920 and 1921 a count was made of the Baltimore oriole nests to be found in the trees within the city limits of Mount Pleasant as published in the proceedings of the Iowa Academy of Science. A recount was made during February of 1927 for comparison with the first census taken six years earlier.
Proceedings of the Iowa Academy of Science
©1928 Iowa Academy of Science, Inc.
Jaques, H. E.
"A Recount of the Baltimore Orioles Nesting in Mount Pleasant, Iowa,"
Proceedings of the Iowa Academy of Science, 35(1), 305-306.
Available at: https://scholarworks.uni.edu/pias/vol35/iss1/73