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Table 2 Morphometric measurements and stable isotope values for females of the ssp. oenanthe in three different regions of their wintering range. Values are given ± SD

From: Morphometrics and stable isotopes differentiate wintering populations of a migratory bird

  Kenya (N = 14) a Mauritania/Mali (N = 11) a Niger (N = 8) a
Wing chord [mm] 95.8 ± 3.1 93.2 ± 2.4 94.0 ± 2.9
Tarsus [mm] 27.0 ± 0.6 26.5 ± 0.9 26.6 ± 0.6
Bill length [mm] 19.8 ± 0.5 19.8 ± 0.9 19.5 ± 0.5
Bill depth [mm] 4.0 ± 0.2 4.1 ± 0.2 4.0 ± 0.3
Bill width [mm] 3.7 ± 0.2 3.8 ± 0.2 3.8 ± 0.2
c2-index 0.42 ± 0.13 0.36 ± 0.19 0.34 ± 0.09
c3-index −1.12 ± 0.16 −1.14 ± 0.12 −1.14 ± 0.10
δ2H [‰] a −49.36 ± 6.34 −53.78 ± 5.60 −50.88 ± 13.37
δ15N [‰] 7.69 ± 1.74 7.39 ± 2.53 9.98 ± 3.40
δ13C [‰] −23.20 ± 0.56 −22.66 ± 1.25 −21.48 ± 2.52
  1. a Sample sizes for δ2H. Kenya: N = 9; Mauritania/Mali: N = 7; Niger: N = 4