In some countries bird-watchers number in the tens of thousands and their sightings have made it easier for ecologists to reconstruct some of the lesser-known patterns in nature, such as the cycles of small mammals in boreal regions…
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In some countries bird-watchers number in the tens of thousands and their sightings have made it easier for ecologists to reconstruct some of the lesser-known patterns in nature, such as the cycles of small mammals in boreal regions…