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