Geese have a problem. Some are arriving at their Arctic mating grounds so exhausted they’re not in the mood anymore.

Shifting environmental signals caused by global warming are making the birds race northward on their spring migration, flying faster and skipping the stops they normally use to rest and refuel, according to a study published Wednesday in the journal Current Biology.

Scientists said the finding was important because it gives new insight into the way climate change is altering the calculus of animal migration.

“This is the first one I know of where a long distance migrant is increasing its travel speed,” said Matthew P. Ayres, a professor of biology at Dartmouth College who was not involved in this study.