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Green coloration of recently laid black-crowned night-heron eggs

January 1, 1991

Color of Black-crowned Night-Heron (Nycticorax nycticorax) eggs of known laying order was quantified in a Wisconsin (USA) colony. Eggs were of greener intensity on the day of laying and one day thereafter than earlier laid eggs within a clutch. Egg color can be used to identify clutches within one day after clutch completion and to assign laying order within clutches during this period.

Publication Year 1991
Title Green coloration of recently laid black-crowned night-heron eggs
DOI 10.2307/1521510
Authors T. W. Custer
Publication Type Article
Publication Subtype Journal Article
Series Title Colonial Waterbirds
Index ID 5222704
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center