Golden-winged Warbler
Common
Name: Golden-winged
Warbler (GWWA)
Scientific
Name:
Vermivora
chrysoptera
Global/Continental
Conservation Status: IUCN
2004 Red List – NT (Near Threatened)
National-level
Conservation Status:
U.S.
– Bird of Conservation Concern
Key
Reference(s):
BNA No. 20 (Confer 1992)
Distribution:
Breeds in s Manitoba, n Minnesota, Wisconsin, Michigan, n Illinois
(locally), extreme n Indiana, s Ontario, extreme sw Quebec, New York, w
Vermont, New Hampshire (locally), w Massachusetts, and nw Connecticut, and
south through Pennsylvania, n New Jersey, w Maryland, West Virginia,
extreme e Kentucky, e Tennessee, w North Carolina, and n Georgia.
Formerly bred in se
Iowa
,
Missouri
, n
Ohio
, c
Illinois
, s
Connecticut
,
Rhode Island
, and nw
South Carolina
. Breeding range contracting
in s and e portions of range but expanding in n portion.
Winters from
Chiapas
and
Guatemala
(casually s
Veracruz
and the
Yucatan
Peninsula
) south through Middle America (mostly on the Caribbean drainage n of
Panama
) to central
Colombia
and n
Venezuela
, and rarely in the Greater Antilles (east to
Puerto Rico
) (AOU 1998).
Habitat
Associations:
Second-growth dominated by shrubs and dense herbaceous growth, from
over-grown fields to forest edge, bogs; in migration and winter, primarily
forest edge and tall second-growth, especially in foothills and mountains
(AOU 1998)
Source(s)
of Research/monitoring Needs (Number in ( ) is Physiographic Area number):
Adirondack Mts Bird Conservation Plan (26); Ohio Hills Bird
Conservation Plan (22); St. Lawrence Plains Bird Conservation Plan (18);
Mid Atlantic Ridge & Valley Bird Conservation Plan (12); Southern Blue
Ridge Bird Conservation Plan (23); Southern New England Bird Conservation
Plan (9); Lower Great Lakes Plain Bird Conservation Plan (15); Northern
Ridge & Valley Bird Conservation Plan (17); Upper Great Lakes Plains
Bird Conservation Plan (16); Allegheny Plateau Bird Conservation Plan
(24); Canadian Action Plans (Dunn 2002); PIF Monitoring Needs document
(Partners in Flight Science Committee 2004)
PIF
Continental Plan Monitoring Needs Category: ** (Long-term population
trend monitoring considered adequate, but some issues (e.g., bias) may not
be accounted for)
RESEARCH/MONITORING NEEDS (source(s) of needs)
Monitoring
- Priority
monitoring action – NOTE: Breeding
Bird Survey (BBS) provides acceptable data at the continental level (PIF
Monitoring Needs doc)
- Second
priority monitoring action – Improve the BBS (PIF Monitoring Needs
doc)
- Improved
and Supplemental Monitoring Programs - Develop improved monitoring program that
considers the patchy distribution & low population size of GWWA
(Lower Great Lakes Plains, Northern
Ridge & Valley, and Allegheny Plateau); Develop supplemental
monitoring programs to track regional population trends (Mid Atlantic
Ridge & Valley); Develop monitoring programs for priority species
occurring at Important Bird Areas, including GWWA (Allegheny Plateau)
- Canadian
GWWA Populations - Determine importance of Canadian populations in sustaining
U.S.
populations (Canadian Action Plan); Improve precision of trend
information for
Canada
, and periodically assess status in
Ontario
(Canadian Action Plan)
- Identify
important GWWA habitat locations - Determine range of suitable habitat, identify breeding sites,
& encourage monitoring for GWWA in these regions (Adirondack Mts,
Ohio Hills, Mid Atlantic Ridge & Valley, Southern New England,
Lower Great Lakes Plain, Allegheny Plateau, and Northern Ridge &
Valley); Detailed inventory of most important sites for nesting GWWA
w/ estimates of population size & habitat requirements (St
Lawrence Plain); Identify additional areas for potential GWWA
management (Ohio Hills)
- see
needs under "Habitat Needs/Ecology ..."
Habitat
Needs/Ecology/Life History
- Better
define bird community (including GWWA) associated w/ different shrub
habitats & identify factors supporting viable populations in these
habitats (Upper Great Lake Plain)
- Determine
range of suitable habitats & area requirements for GWWA (Allegheny
Plateau)
- see
needs under "Wintering" and “Monitoring”
Effects
of Management Practices
- Compare
suitability of early successional habitat resulting from natural
disturbance vs forestry practices, power line rights of way & mine
reclamation for priority species (including GWWA) in these regions
(using breeding densities and nesting success) (Adirondack Mts, Ohio
Hills, Mid Atlantic Ridge & Valley, Northern Ridge & Valley,
Lower Great Lakes Plain, Southern New England, and Allegheny Plateau)
- Effects
of habitat management (even-aged timber man. & burning) on mature
forest birds (verify expected positive response for GWWA) (
Southern Blue Ridge
)
- Effects
of game & waterfowl management practices on priority nongame
species (including GWWA) (St Lawrence Plain)
- Develop
best management practices for GWWA - Define scope & frequency of disturbance factors (storm,
fire, grazing) that restore habitat for GWWA while avoiding conflicts
w/ forest restoration (Southern Blue Ridge); determine
habitat-management options & assess potential for actions that
will discourage Blue-winged Warblers and favor GWWA
in areas of current overlap (St Lawrence Plain, and Ohio
Hills); effects of management practices to sustain shrub communities
within a landscape matrix (Upper Great Lakes Plain); develop specific
recommendation about burning regimes for maintaining suitable habitat
for GWWA (Lower Great Lakes Plain, Northern Ridge & Valley, and
Allegheny Plateau); develop best management practices for utility
rights-of-way (Ohio Hills)
Effects
of Human Development/Disturbance
- Impacts
of human development on early successional species (including GWWA)
(Adirondack Mts)
Landscape
- Determine
the relationship between patch size & nesting success of GWWA (
Southern New England
)
Species
Interactions
- Interactions
between GWWA and Blue-winged Warblers - Study interactions between GWWA &
Blue-winged Warblers in areas of current overlap (St Lawrence Plain);
Determine effects of Blue-winged Warbler on recruitment, habitat
selection, and nesting success of GWWA (
Southern New England
)
- Determine
effects of woodcock management techniques on other priority, early-successional
species including GWWA (Lower Great Lakes Plain, Northern Ridge &
Valley, Allegheny Plateau, St Lawrence Plain, and Adirondack Mts)
Predation
- Develop
better descriptions of predation patterns on GWWA (Upper Great Lakes
Plain)
Nest
Parasitism
- Determine
effects of cowbird parasitism on reproductive success of GWWA and
other early successional species (
Southern New England
and Upper Great Lakes Plain)
Migration
- More
information about the value of shrublands for migrating passerines,
including GWWA (Upper Great Lakes Plain)
Wintering
- Describe
winter habitat requirements for GWWA (Canadian Action Plan)
Demographics
- Determine
nest productivity of birds in montane wetlands & high elevation
balds (including GWWA) (
Southern Blue Ridge
)
- see
needs in several other categories
[Link
to References]
[Link
to PIF Bird Conservation Plans]
|
