The Marsh Wren is an aggressive, territorial bird of cattail and bulrush marshes, where males build multiple dummy nests to attract females and confuse predators. Males can learn up to 200 distinct song types, and western populations have significantly larger song repertoires than eastern populations — a rare documented geographic variation in song complexity. It frequently punctures the eggs of neighboring birds.
Best time to see a Marsh Wren
The best time to see a Marsh Wren is January–June, when about 60% of U.S. sightings happen, based on 12,847 research-grade iNaturalist observations.
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Recent Marsh Wren sightings near you
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