1. Influence of age and time on reproductive performance of female lesser scaup;Afton;Auk,1984
2. Distribution of birds amongst habitats: theory and relevance to conservation;Bernstein,1991
3. Evolution in Age-Structured Populations;Charlesworth,1994
4. Reproductive Success;Clutton-Brock,1988
5. Habitat Selection in Birds;Cody,1985