Allen's Hummingbird
Common
Name: Allen's Hummingbird (ALHU)
Scientific
Name:
Selasphorus
sasin
Global/Continental
Conservation Status: NOT on the IUCN Red List
National-level
Conservation Status: Nothing
other than coverage by the Migratory Bird Treaty Act
Key
Reference(s):
BNA No. 501 (Mitchell 2000)
Distribution:
Breeds from sw
Oregon
south through coastal
California
to
Ventura
County
. Winters mostly in c
Mexico
south to Distrito Federal, perhaps north to
Aguascalientes
and Guanajuato, also casually along
Gulf
Coast
in se
Texas
, s
Louisiana
,
Mississippi
,
Alabama
, and
Georgia
. Resident in the Channel Islands (off s
California
), and in coastal s
California
(
Los Angeles
County
, probably also
Orange
County
) (AOU 1998).
Habitat
Associations:
Chaparral, open oak woodland, riparian woodland, residential areas;
in winter, montane woodland (AOU 1998).
Source(s)
of Research/monitoring Needs: BNA No. 501 (Mitchell
2000); PIF Monitoring Needs document (Partners in Flight Science Committee
2004)
PIF
Continental Plan Monitoring Needs Category: Mo2 (BBS trends have very
low precision)
RESEARCH/MONITORING NEEDS (source(s) of needs)
Monitoring
- Priority
monitoring action – Improve the Breeding Bird Survey (BBS) (PIF
Monitoring Needs doc); (similar) More extensive & appropriate
monitoring methods should be implemented to detect possible population
declines (BNA)
- Second
priority monitoring action – Improve the Christmas Bird Count (CBC)
(PIF Monitoring Needs doc)
Effects
of Human Development/Disturbance
- Determine
effects of feeders & nectar from exotics & ornamentals on ALHU
& other hummingbirds (BNA)
Species
Interactions
- Studies
of competition, segregation, & possible hybridization between ALHU
and Rufous Hummingbird in range of overlap in southeast Oregon (BNA)
- see
needs under "Wintering"
Migration
- Information
on timing & routes of ALHU migration (BNA)
Wintering
- Define
geographic extent of winter range; ecology in winter (habitat
preferences, food plants, molt, competition with other hummingbird
species) (BNA)
Invasives/Exotics/Disease/Parasites/Contaminants
- See
needs under “Effects of Human Development/Disturbance”
Demographics
- Information
on demographics (annual & lifetime reproductive success,
longevity, survival of juveniles & adults, site fidelity,
dispersal) (BNA)
Genetics/Taxonomy/Systematics
- Compae
the migratory subspecies (S. s
sasin) and the sedentary subspecies (S.
s. sedentarius) (BNA)
[Link
to References]
[Link
to PIF Bird Conservation Plans]
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