Comparing migration of Whinchats Saxicola rubetra from the non-breeding grounds in Liberia and Nigeria: Differences due to geography but otherwise very similar.

It is important to note that although there may be significant individual variation and that we assume great circle shortest distances between stopovers, the key result is that at least half of all daylight hours are available to a whinchat to forage and rest even during migration legs.

also in 13,097 other papers

There were significantly fewer stopovers in spring for Nigerian birds compared to Liberian birds (−1.0 ± 0.26, t = −3.8, P, 0.0004), but a similar number of stopovers for Liberian birds in autumn compared to spring (−0.3 ± 0.3, t = −0.9, P = 0.38), and a marginally significant difference in the change in the difference between spring and autumn across countries, with birds tagged in Nigeria increasing the number of stopovers in autumn, while they decreased for birds tagged in Liberia (change in difference, 0.72 ± 0.39, t = 1.8, P = 0.075; N = 92 complete spring or autumn passage periods, N = 51 birds; marginal R 2 = 0.16; Fig 5 ).

also in 26,082 other papers