References

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Clements, J. F. 1974. Birds of the World: A Check List. The Two Continents Publishing Group, Ltd., New York. 521 pp.

Del Hoyo, J., A. Elliott and J. Sargatal [Eds.] 1992. Handbook of the Birds of the World. Volume 1. Lynx Edicions, Barcelona. 696 pp.

Nice, M. M. 1962. Development of behavior in precocial birds. Transactions of the Linnaean Society of New York. Volume VIII, American Museum of Natural History, New York. 212 pp.

Pettingill, O. S. Jr. 1970. Ornithology in Laboratory and Field. Fourth Edition. Burgess Publishing Company, Minneapolis. 524 pp.

Semenchuk, G. P. [Ed.] 1992. The Atlas of Breeding Birds of Alberta. Federation of Alberta Naturalists, Edmonton. 390 pp.

Walters, M. 1994. Bird's Eggs. Eyewitness Handbooks. Stoddart Publishing Co. Limited, Toronto. 256 pp.

Welker, R. H. 1955. Birds and Men. The Belknap Press of Harvard University Press, Cambridge. 230 pp.