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Tree Swallows are one of our most exciting and beautiful songbirds, and they can also be a great addition to any backyard birding list. They can consume up to 1000 mosquitoes a day, so they help reduce pest insects in the yard. These birds are also incredibly tolerant of humans, and can be watched flying and perching in trees and other structures. While they nest in tall grasses, swallows will also build their nest in a variety of locations, including open fields, pastures, wetlands, and even your garden. Nests are built of dried grasses and other twigs, and