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Montana Field Guide

Montana Field Guides

Anna's Hummingbird - Calypte anna

Native Species

Global Rank: G5
State Rank: SNA

Agency Status


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General Description
Medium-sized hummingbird, iridescent bronzy green top side; grayish below, with dark tails. Adult males (and some young males) have both a rose gorget and crown, unlike any other North American hummingbird. Adult females may have few rose gorget feathers, but usually lack color on the crown.

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: 126

(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)

Nests often found in oak trees, along with vine, brush and human-built structures. Nests built in February and only used once. Materials reused in completion of second nest.

Food Habits
Diet consists of nector and small insects. Also spiders and tree sap.

Reproductive Characteristics
Average clutch size two eggs. Eggs usually laid before completion of nest; construction continues. Incubation lasts 14 to 19 days.

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Citation for data on this website:
Anna's Hummingbird — Calypte anna.  Montana Field Guide.  .  Retrieved on , from