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Montana Field Guide

Montana Field Guides

Ruddy Turnstone - Arenaria interpres

Native Species

Global Rank: G5
State Rank: SNA

Agency Status


External Links

General Description
The Ruddy turnstone breeds in the high Arctic and winters along both coasts from the northern United States into South America and the Caribbean. The species is an uncommon migrant through Montana with fewer than five observations reported in a typical year (Nettleship et al. 2000, MTNHP 2019).

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
Montana Range Range Descriptions


Western Hemisphere Range


Observations in Montana Natural Heritage Program Database
Number of Observations: 95

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


SUMMER (Feb 16 - Dec 14)
Direct Evidence of Breeding

Indirect Evidence of Breeding

No Evidence of Breeding

WINTER (Dec 15 - Feb 15)
Regularly Observed

Not Regularly Observed


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

Montana is between the main migration paths on the west coast and in the midwest.

In migration, Ruddy Turnstones are likely to be found foraging on stubble fields or on sandy shorelines of lakes or reservoirs (Johnsgard 1986).

The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus melanopygus and Bombus sylvicola (Wilson et al. 2010, Koch et al. 2012, Williams et al. 2014).

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Citation for data on this website:
Ruddy Turnstone — Arenaria interpres.  Montana Field Guide.  .  Retrieved on , from