Search Field Guide
Advanced Search
Montana Animal Field Guide

Montana Field Guides

Bullock's Oriole - Icterus bullockii

  • Bullock`s Oriole - Icterus bullockii
Google for more images Google for web pages

Global Rank: G5
State Rank: S5B

Agency Status
USFWS: none
USFS: none
BLM: none
CFWCS Tier: 2
PIF: none
 

General Description
Older males have bright black and orange-yellow plumage. The crown, nape, back, and scapulars being black; the remainder of the head and underparts are orange-yellow in color. The younger males resemble females, which are grayish-green and yellow, with black on the throat. (Rising and Williams. The Birds of North America, No. 416, 1999).

General Distribution
Montana Range



Western Hemisphere Range

 


Summary of Observations Submitted for Montana
Number of Observations: 1404

(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")


 

(Records associated with a range of dates are excluded from time charts)



Migration
In the Bozeman area, normal migration periods are from May 17 to May 30 with no discernible fall movement.

Habitat
Prefers open woodland areas, especially riparian (river) woodlands with large cottonwoods, sycamores, and willows. During spring and fall migration it is found in a variety of open woodland and urban parklands and tall shrubland. (Rising and Williams 1999).

Food Habits
Eats mostly insects, especially butterfly and moth larvae and pupae, grasshoppers and crickets, beetles and other insects. (Rising and Williams 1999).

Reproductive Characteristics
Nests are typically pensile, often suspended from a few thin branches. Eggs are oval. Clutch size ranges from 3 to 7 eggs. (Rising and Williams 1999). Statewide, nesting is from May 29 to August 12.

Login Logout
Citation for data on this website:
Bullock's Oriole — Icterus bullockii.  Montana Field Guide.  Retrieved on February 9, 2010, from http://FieldGuide.mt.gov/detail_ABPBXB9220.aspx
 
There are currently 40 active users in the Montana Field Guide.