Aspects of the anatomy, morphology and moult of the crowned plover (Vanellus coronatus)

Abstract

Aspects of the anatomy and morphology of crowned plovers (Vanellus coronatus) collected over a period of one year at the J.B.M. Hertzog (Bloemfontein) and B.J. Vorster (Kimberley) airports were investigated. The renewal of plumage in both sexes apparently takes place mainly during the summer months. Except for some bill dimensions, all standard body measurements of adult and immature males are significantly larger than those of females. No clear seasonal pattern could be distinguished in the body and liver mass of the birds. Seasonal variations in the visible fat content of adult crowned plovers of both sexes are probably related to breeding activities and the availability of food.