Determining Sex in Breeding Birds

Abstract

Bandin 46] Mxso, Sex in Breeding Birds January old, 12.7 grams.Most of the young left the nest when 10 days old, but some not until 11 days of age.The female broods the young for two or more days while the male feeds them almost entirely.Later both parents feed them until they have been out of the nest at least a week.The majority of the Prothcnotaries leave for the South during late July or early August, a few sometimes remaining until early September.Ten females averaged in weight 17.41 grams (13.6 to 19.6)..No males were weighed.