The nature and evolution of the photoperiodic control of reproduction in wildfowl of the family Anatidae.
D000818:Animals; D005075:Biological Evolution; D001717:Birds / Q000502:physiology*; D002940:Circadian Rhythm; D004372:Ducks; D004739:England; D005260:Female; D005777:Geese; D008027:Light; D008954:Models, Biological; D010507:Periodicity; D012098:Reproduction; D012621:Seasons; D013045:Species Specificity