Morandini, V., A. Lescröel, D. Jongsomjit, S. Winquist, A. Schmidt, G. Ballard, P. Kappes, and K. M. Dugger. 2019. Prevalence of three-chick nests in Adelie penguin Pygoscelis Adeliae at Cape Crozier, Ross Island. Marine Ornithology 47:77-80
This link will direct you to a non-government website that may have different privacy
policies from those of the U.S. Geological Survey.