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This is Scientific American 60-second science.

I'm Annie Sneed.

Every spring, a bird called the barnacle goose migrates from the North Sea coast to the Russian Arctic, where it breeds.

That's a 3,000-kilometer trip. Along the way, the geese usually take pit stops to rest and refuel,

but the Arctic spring has been arriving earlier and earlier.

So researchers analyze six years of Barnacolcus migratory tracking data to try to figure out if

these geese, and other species like it, can adapt their migration to stay in sync with the changing

seasons. And then we used satellite images to see when snow was melting in the Arctic,

and then we could relate the timing of the birds to the snow melt.

Bart Nolet, an ecologist at the University of Amsterdam.

Nolet and his colleagues found that the geese did not leave their wintering ground

sooner to match the earlier Arctic Spring.

But they did speed up their trip by skipping many of their usual stopovers.

The birds arrived in the Arctic up to 13 days earlier than they used to, but at a cost.

So in a normal year, they start laying your eggs right after arrival.

But now they spent more than a week forging before they were laying their eggs.

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