Field Sparrows make use of all the warm months of the year by building multiple nests each breeding season. Females will build their first, cup-shaped nest near the ground in dense grasses. As shrubs and trees grow their leaves throughout the summer, they will pick new spots higher off the ground each time — to protect their eggs from mammals and snakes. These birds avoid human activity and they’re sensitive to suburban sprawl. We can help conserve field sparrows by conserving brushy habitats in agricultural landscapes.

More info and transcript at BirdNote.org. 

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