1. Bird weights and egg weights;Amadon;Auk,1943
2. Bancroft , G. T. Nutrient content of eggs and the energetics of clutch formation in the Boat-tailed Grackle Auk
3. Bancroft , G. T. Growth and sexual dimorphism of the Boat-tailed Grackle Condor.
4. Age, egg-size and breeding success in the Herring Gull Larus argentatus;Davis;Condor.,1975
5. Functional aspects of incubation in the Herring Gull;Drent;Behav. Suppl.,1970