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Montana Field Guide

Montana Field Guides

Least Bittern - Ixobrychus exilis

Accidental Species

Global Rank: G5
State Rank: SNA

Agency Status
USFWS: MBTA; BCC11
USFS:
BLM:
PIF:


 

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Copyright by: The Macaulay Library at the Cornell Lab of Ornithology, Ithaca, NY, all rights reserved.
 
General Description
The Least Bittern breeds from southeast Canada through the U.S. and Mexico. Populations west of the Mississippi River are discontinuous and concentrated in low-lying areas of the Central Valley and Modoc Plateau of California, Klamath and Malheur Basins of Oregon, and along the Colorado River of southwest Arizona and southeast California (Poole et al. 2009). In Montana, the Least Bittern is an accidental species (Montana Bird Distribution Committee 2012).

For a comprehensive review of the conservation status, habitat use, and ecology of this and other Montana bird species, please see Marks et al. 2016, Birds of Montana.

Species Range
Accidental

Western Hemisphere Range

 


Summary of Observations Submitted for Montana
Number of Observations: 4

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

Breeding
(direct evidence "B")


Breeding
(indirect evidence "b")


No evidence of Breeding
(transient "t")


Overwintering
(regular observations "W")


Overwintering
(at least one obs. "w")



 

(Observations spanning multiple months or years are excluded from time charts)



References
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Citation for data on this website:
Least Bittern — Ixobrychus exilis.  Montana Field Guide.  .  Retrieved on , from