bug eating machines

Return of the Tree Swallows

By Mia McPherson|March 25th, 2015|Categories: Bear River Migratory Bird Refuge, Beaverhead County, Birds, Box Elder County, Centennial Valley, Montana, Red Rock Lakes National Wildlife Refuge, Tree Swallows, Utah|Tags: adult, breeding season, bug eating machines, first of year, flight, flock, flying, male, marsh, migration, nest box, nesting box, phragmites, phrags, refuge, return, spring, stand, swallow, swallows, Tachycineta bicolor, Tree Swallow|

Not only are Tree Swallows colorful and beautiful they are bug-zapping machines and keep the number of flying insects down.

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