1. Species and area;Arrhenius;J. Appl. Ecol.,1921
2. Bird Studies Canada, 2009a. Marsh Monitoring Program Participant’s Handbook for Surveying Amphibians. Published by Bird Studies Canada in cooperation with Environment Canada and the U.S. Environmental Protection Agency.
3. Bird Studies Canada, 2009b. Marsh Monitoring Program Participant’s Handbook for Surveying Marsh Birds. Published by Bird Studies Canada in cooperation with Environment Canada and the U.S. Environmental Protection Agency.
4. Breeding birds of isolated woodlots: area and habitat relationships;Blake;Ecology,1987