Breeding Biology and Twinning Experiments of Rhinocerous auklets on Cleland Island

The second part of the experiment was to test Lack’s hypothesis that the clutch size of a bird  species is determined through evolution by the average number of young the parents are able to fledge.

K.R. Summers and R.H. Drent authored this paper for the Murrelet  Vol 60, No 1 Spring 1979

 

 

See the full PDF here: The Murrelet 1979