This includes the attachment of individually numbered bands to the birds' legs, sometimes with site-specific colour-bands or plastic leg-flags, measurements of wing-length, head and bill length, weight, degree of moult or breeding plumage.
This includes the attachment of individually numbered bands to the birds' legs, sometimes with site-specific colour-bands or plastic leg-flags. Measurements are made of wing-length, head and bill length, weight, as well as degree of moult or signs of breeding plumage.