Marsh Wren
ExploreBirds
Marsh Wren
cistothorus palustris
The Marsh Wren is a tiny, energetic songbird renowned for its remarkably loud and bubbly voice, which can fill an entire wetland with mechanical, rattling trills. Found clinging tightly to reeds and cattails, this secretive bird is far more often heard than seen. It spends its days hopping actively through dense marsh vegetation, searching for small invertebrates and defending its territory with endless vigor. An intriguing aspect of Marsh Wren behavior is the male's industrious nest-building habit. During the breeding season, a single male will construct up to a dozen dome-shaped dummy nests woven from grass and cattails. These decoy nests serve to attract females, confuse predators, and mark territory boundaries, demonstrating the incredible resourcefulness of this diminutive wetland specialist.
Habitat: Found in dense, standing emergent vegetation of freshwater and saltwater marshes, particularly among cattails, rushes, and reeds.
Appearance
The Marsh Wren is a small, plump bird with a thin, slightly down-curved bill and a tail that it characteristically cocks upright. It is clad in warm brown upperparts, featuring a distinct black-and-white streaked triangular patch on its upper back. A prominent white stripe runs above each eye, contrasting with a dark crown. Its underparts are mostly pale, fading to buffy brown along the flanks. They measure around 10 to 14 centimeters in length with a short, rounded wingspan.
KingdomAnimaliaPhylumChordataClassAvesOrderPasseriformesFamilyTroglodytidaeGenusCistothorus
Category
BirdsRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
A male Marsh Wren may build up to 14 nests in a single breeding season, but only one is actually used to raise young.
Marsh Wrens are notoriously aggressive and will sometimes destroy the eggs of neighboring birds, including other Marsh Wrens or Red-winged Blackbirds, to reduce competition.
Their song is so loud and persistent that they have been known to sing all through the night, especially during the spring breeding season.
Special abilities
Ability
Decoy Nest Weaver
Males construct multiple dummy nests to mislead predators and showcase nesting territory to potential mates.
Ability
Split-Leg Straddling
Equipped with strong feet and legs, they can grasp two separate vertical reed stems simultaneously to remain stable in high marsh winds.
Ability
Duet Dialects
They possess an exceptionally large vocal repertoire, capable of singing over one hundred distinct, rapid-fire song variations to defend territories.
Measurements & details
- Length
- 10+ cm
- Wingspan
- 15+ cm
- Weight
- 0.009+ kg
- Lifespan
- 1+ years
- Top Speed
- 25 km/h
- Clutch Size
- 3+
- Incubation
- 12+ days
- Migration Distance
- 1500 km
Diet & Feeding
Feeds primarily on a wide variety of aquatic and terrestrial insects, spiders, and tiny aquatic invertebrates found near the water's surface.
Primary Foods
- Spiders
- Caddisflies
- Mosquitoes
- Snails
- Beetles
Foraging Method
- Foraging
Ecological connections
parasite
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Brown-headed Cowbird
Molothrus ater
Lays eggs in the Marsh Wren's nests, forcing the wrens to raise their young.
eaten by
Marsh Rice Rat
Oryzomys palustris
Raids nests to consume the eggs and vulnerable nestlings of the Marsh Wren.
competitor
Red-winged Blackbird
Agelaius phoeniceus
Competes intensely for nesting territories and food resources in the same marsh ecosystems.
Traits
No trait badges are assigned for this object yet.
Also known as
No aliases listed yet.
Collections
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How long is Marsh Wren?
10+ cm
What is Marsh Wren's wingspan?
15+ cm
How much does Marsh Wren weigh?
0.009+ kg
How long does Marsh Wren live?
1+ years
How fast can Marsh Wren move?
25 km/h
What does Marsh Wren eat?
Feeds primarily on a wide variety of aquatic and terrestrial insects, spiders, and tiny aquatic invertebrates found near the water's surface.
Where is Marsh Wren usually found?
Found in dense, standing emergent vegetation of freshwater and saltwater marshes, particularly among cattails, rushes, and reeds.
How does Marsh Wren hunt?
Foraging
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