Species: Icterus bullockii
Bullock's Oriole
Species
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Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Aves
Order
Passeriformes
Family
Icteridae
Genus
Icterus
NatureServe
Classification
Other Global Common Names
Bolsero Calandria - oriole de Bullock
Informal Taxonomy
Animals, Vertebrates - Birds - Perching Birds
Formal Taxonomy
Animalia - Craniata - Aves - Passeriformes - Icteridae - Icterus - Formerly considered conspecific with I. GALBULA and I. ABEILLEI under the name I. GALBULA (Northern Oriole) but resplit into separate species by AOU (1995). See AOU (1995, 1998) for a brief summary of the bases for the split.
Ecology and Life History
Migration
true - true - true - Arrives in the northern U.S. and Canada in April-May; males precede females by a few days. Birds from most of breeding range apparently migrate to the southwestern U.S. for late summer, then continue later in fall southward into Mexico (Rohwer and Manning 1990).
Non-migrant
true
Locally Migrant
true
Food Comments
Gleans insects, especially caterpillars, from trees and shrubs; also eats various fruits and nectar.
Reproduction Comments
Clutch size is 3-6 (commonly 4-5). Incubation, by female, lats 12-14 days. Young are tended by both parents, leave nest at 12-14 days. Ejects brown-headed cowbird eggs from nest (Sealy and Neudorf 1995, Condor 97:369-375).
Ecology Comments
Thought to be a solitary nester, but tends to aggregate nests (williams 1988). Females foraged regularly more than 200 meters from nest, and up to 1 kilometer away (Williams 1990).
Length
22
Weight
34
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
1996-12-04
Global Status Last Changed
1996-12-04
Other Status
LC - Least concern
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.AB=SU&CA.BC=S5&CA.SK=S5&US.AZ=SNR&US.CA=SNR&US.CO=S5&US.ID=S5&US.KS=S4&US.MT=S5&US.NN=S3&US.NE=SNR&US.NV=S5&US.NM=S4&US.ND=SNR&US.OK=S4&US.OR=S4&US.SD=S4&US.TX=S4&US.UT=S4&US.WA=S4&US.WY=S5" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
BREEDS: southern interior British Columbia, southern Alberta, southwestern Saskatchewan, eastern Montana, southwestern North Dakota, and central South Dakota south (east of coastal areas of Washington and Oregon) to northern Baja California, central Sonora, northern Durango, Coahuila, and central and southern Texas, and east to western Nebraska, western Kansas, and western Oklahoma (AOU 1983). WINTERS: regularly in coastal California, and from southern Sinaloa, the state of Mexico, and Puebla south to Guatemala (casually to northwestern Coasta Rica), in small numbers in the Gulf coast region from Texas to southern Georgia and Florida, and casually north to central California and southern Arizona (AOU 1983). MIGRATES: regularly through western North America west of the Rockies, including Baja California (AOU 1983).