lusitanius Yellow-legged Gull
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Table 1. Measurements associated with primary feathers and skeletal parts taken in adults of Yellow-legged Gull in the eastern bay of Biscay.
Data from:
Sex Differentiation of Yellow-legged Gull
(Larus michahellis lusitanius): the Use of Biometrics,
Bill Morphometrics and Wing Tip Coloration, by: JUAN ARIZAGA, ASIER ALDALUR, ALFREDO HERRERO & DAVID GALICIA IN: Waterbirds 31(2): 211-219, 2008.
| Abbreviation | Variable | Error |
| WLEN | Wing length. | ± 1.0 mm |
| WSPA | Wing span. | ± 1.0 mm |
| P1 to P10 | Lengths of primary feathers to the wing tip, in a folded wing. Numbered from outermost to innermost. |
± 1.0 mm |
| TAIL | Tail length. | ± 1.0 mm |
| BODY | Body length. | ± 1.0 mm |
| TARL | Tarsus length. | ± 0.5 mm |
| TARW | Minimum tarsus width, measured laterally. | ± 0.5 mm |
| HB | Length of head and bill. | ± 0.5 mm |
| BILL1 | Bill length, from the distal tip up to the point where it joins the skull. | ± 0.5 mm |
| BILL2 | Bill length, up to the feathers base (culmen). | ± 0.5 mm |
| BILL3 | Bill length, up to the frontal nostril edge. | ± 0.5 mm |
| BILLD | Bill depth. | ± 0.5 mm |
| G1 | Length from the tip of the lower mandible until the gonys lower point. | ± 0.5 mm |
| G2 | Gonys maximum height. | ± 0.5 mm |
| G3 | Length from the gonys lower point until the lower mandible base. | ± 0.5 mm |
| LML | Lower mandible length. | ± 0.5 mm |