Rhinoceros Auklet Feather CORT, Diet and Dive Data

The data contained in this package were collected in 2012 and 2013 on St. Lazaria Island and Middleton Island in Alaska and on Teuri Island in Japan. These data describe how rhinoceros auklet chick diets change between and within years, and how those changes affect adult behavior, fledging nutritional status, and whether adults carry signals of the breeding season into the post-reproductive season. Data sets include the results of assays of feathers for the avian stress hormone corticosterone.