66. Evans, C. D., A. S. Hawkins, and W. H. Marshall. 1952. Movements of waterfowl
broods in Manitoba. U.S. Department of Interior, Fish and Wildlife Service,
Special Scientific Report Wildlife: No. 16. 47 pp.
Human intrusion was found to influence brood movement in some instances,
but it often had little effect and some broods could not be driven from their
potholes.