Parental Provisioning and Nestling Departure Decisions: A Supplementary Feeding Experiment inTufted Puffins (Fratercula cirrhatta) on Triangle Island, BC

Carina Gjerrum’s Thesis published in The Auk 121(2):463-472. 2004 Abstract I used a supplemental feeding experiment to determine whether adult Tufted Puffins (Fratercula cirrhata) would decrease provisioning effort in response to a reduction in nestling nutritional requirements, and to investigate the relationship between parental provisioning effort and timing of fledging. As predicted, parents of the