Every year, billions of birds from over 300 species migrate to Canada’s Boreal Forest to breed, and twice as many make the journey south to warmer wintering grounds.¹ Some days at the Lesser Slave Lake Bird Observatory, we may see thousands of geese or songbirds flying overhead in the early morning hours, but this is just a sliver of migration. Most of it is actually happening as we sleep.

While running our nightly owl migration monitoring program, it is not unusual to hear geese or Sandhill Cranes passing overhead. Sometimes we can even pick out smaller songbirds like sparrows chipping as they go.

Above: Although most birds have already taken the red-eyed flight farther south, our White-thro…

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