Table 1 Tracked individuals used in analysis. ‘id’ refers to individual bird, ‘day gap’ refers to the number of days between the last fix on the breeding grounds and the first fix away from that region, ‘km between’ is the number of kilometers between the breeding grounds and the first fix away from that region, ‘departure 1 & 2’ are the possible dates of departure, ‘40.8’ and ‘32.7’ are the dates the birds were tracked south of those respective latitudes, ‘nonbreeding’ is arrival date to nonbreeding site, and ‘route’ is the route in the Gulf of Alaska the individual selected

From: Migratory strategies across an ecological barrier: is the answer blowing in the wind?