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Description Tree Swallows (Tachycineta bicolor) are trying to coax their nestlings out of the nest boxes in this series of videos taken a couple weeks apart. The adult birds do this by imitating the bringing of food to the nestlings but not feeding them. Eventually, this behavior, coupled with calls from the adults, urges the nestlings to fledge. I did not witness any of these Tree Swallows fledging on either of these days.

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Paul Allison

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Title:Tree Swallows At Nest Box With Chicks

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