From: Morphometrics and stable isotopes differentiate wintering populations of a migratory bird
Kenya (N = 14) a | Mauritania/Mali (N = 16) a | Niger (N = 29) a | |
---|---|---|---|
Wing chord [mm] | 99.3 ± 2.4 | 97.7 ± 4.4 | 97.0 ± 2.4 |
Tarsus [mm] | 28.4 ± 0.9 | 27.4 ± 0.8 | 27.2 ± 1.0 |
Bill length [mm] | 20.5 ± 0.6 | 20.0 ± 0.8 | 19.5 ± 0.7 |
Bill depth [mm] | 4.1 ± 0.2 | 4.2 ± 0.3 | 4.0 ± 0.3 |
Bill width [mm] | 3.8 ± 0.2 | 3.8 ± 0.2 | 3.7 ± 0.2 |
c2-index | 0.36 ± 0.09 | 0.28 ± 0.11 | 0.29 ± 0.13 |
c3-index | −1.08 ± 0.13 | −1.13 ± 0.19 | −1.12 ± 0.19 |
δ2H [‰] a | −47.39 ± 5.56 | −52.94 ± 12.20 | −65.29 ± 8.96 |
δ15N [‰] | 7.79 ± 1.47 | 6.76 ± 2.36 | 10.85 ± 2.48 |
δ13C [‰] | −23.23 ± 0.70 | −23.39 ± 0.75 | −22.58 ± 1.16 |