Winter distribution of willow flycatcher subspecies

Eben H. Paxton, Philip Unitt, Mark K. Sogge, Mary Whitfield, Paul S Keim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Documenting how different regions across a species' breeding and nonbreeding range are linked via migratory movements is the first step in understanding how events in one region can influence events in others and is critical to identifying conservation threats throughout a migratory animal's annual cycle. We combined two studies that evaluated migratory connectivity in the Willow Flycatcher (Empidonax traillii), one using mitochondrial DNA sequences from 172 flycatchers sampled throughout their winter range, and another which examined morphological characteristics of 68 museum specimens collected in the winter range. Our results indicate that the four subspecies occupy distinct but overlapping regions of the winter range. Connectivity between specific breeding and winter grounds appears to be moderate to strong, with distributions that suggest migration patterns of both the chain and leap-frog types connecting the breeding and nonbreeding grounds. The Pacific lowlands of Costa Rica appear to be a key winter location for the endangered Southwestern Willow Flycatcher (E. t. extimus), although other countries in Central America may also be important for the subspecies.

Original languageEnglish (US)
Pages (from-to)608-618
Number of pages11
JournalCondor
Volume113
Issue number3
DOIs
StatePublished - Aug 2011

Fingerprint

subspecies
winter
breeding
connectivity
Central America
annual cycle
frog
Costa Rica
mitochondrial DNA
museum
frogs
lowlands
distribution
nucleotide sequences
animal
animals

Keywords

  • Empidonax traillii extimus
  • Migratory connectivity
  • Mixed-stock analysis
  • Southwestern Willow Flycatcher
  • Winter distribution

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Paxton, E. H., Unitt, P., Sogge, M. K., Whitfield, M., & Keim, P. S. (2011). Winter distribution of willow flycatcher subspecies. Condor, 113(3), 608-618. https://doi.org/10.1525/cond.2011.090200

Winter distribution of willow flycatcher subspecies. / Paxton, Eben H.; Unitt, Philip; Sogge, Mark K.; Whitfield, Mary; Keim, Paul S.

In: Condor, Vol. 113, No. 3, 08.2011, p. 608-618.

Research output: Contribution to journalArticle

Paxton, EH, Unitt, P, Sogge, MK, Whitfield, M & Keim, PS 2011, 'Winter distribution of willow flycatcher subspecies', Condor, vol. 113, no. 3, pp. 608-618. https://doi.org/10.1525/cond.2011.090200
Paxton EH, Unitt P, Sogge MK, Whitfield M, Keim PS. Winter distribution of willow flycatcher subspecies. Condor. 2011 Aug;113(3):608-618. https://doi.org/10.1525/cond.2011.090200
Paxton, Eben H. ; Unitt, Philip ; Sogge, Mark K. ; Whitfield, Mary ; Keim, Paul S. / Winter distribution of willow flycatcher subspecies. In: Condor. 2011 ; Vol. 113, No. 3. pp. 608-618.
@article{6f517119bc884289b47adefbce30b2cc,
title = "Winter distribution of willow flycatcher subspecies",
abstract = "Documenting how different regions across a species' breeding and nonbreeding range are linked via migratory movements is the first step in understanding how events in one region can influence events in others and is critical to identifying conservation threats throughout a migratory animal's annual cycle. We combined two studies that evaluated migratory connectivity in the Willow Flycatcher (Empidonax traillii), one using mitochondrial DNA sequences from 172 flycatchers sampled throughout their winter range, and another which examined morphological characteristics of 68 museum specimens collected in the winter range. Our results indicate that the four subspecies occupy distinct but overlapping regions of the winter range. Connectivity between specific breeding and winter grounds appears to be moderate to strong, with distributions that suggest migration patterns of both the chain and leap-frog types connecting the breeding and nonbreeding grounds. The Pacific lowlands of Costa Rica appear to be a key winter location for the endangered Southwestern Willow Flycatcher (E. t. extimus), although other countries in Central America may also be important for the subspecies.",
keywords = "Empidonax traillii extimus, Migratory connectivity, Mixed-stock analysis, Southwestern Willow Flycatcher, Winter distribution",
author = "Paxton, {Eben H.} and Philip Unitt and Sogge, {Mark K.} and Mary Whitfield and Keim, {Paul S}",
year = "2011",
month = "8",
doi = "10.1525/cond.2011.090200",
language = "English (US)",
volume = "113",
pages = "608--618",
journal = "Condor",
issn = "0010-5422",
publisher = "American Ornithologist Society",
number = "3",

}

TY - JOUR

T1 - Winter distribution of willow flycatcher subspecies

AU - Paxton, Eben H.

AU - Unitt, Philip

AU - Sogge, Mark K.

AU - Whitfield, Mary

AU - Keim, Paul S

PY - 2011/8

Y1 - 2011/8

N2 - Documenting how different regions across a species' breeding and nonbreeding range are linked via migratory movements is the first step in understanding how events in one region can influence events in others and is critical to identifying conservation threats throughout a migratory animal's annual cycle. We combined two studies that evaluated migratory connectivity in the Willow Flycatcher (Empidonax traillii), one using mitochondrial DNA sequences from 172 flycatchers sampled throughout their winter range, and another which examined morphological characteristics of 68 museum specimens collected in the winter range. Our results indicate that the four subspecies occupy distinct but overlapping regions of the winter range. Connectivity between specific breeding and winter grounds appears to be moderate to strong, with distributions that suggest migration patterns of both the chain and leap-frog types connecting the breeding and nonbreeding grounds. The Pacific lowlands of Costa Rica appear to be a key winter location for the endangered Southwestern Willow Flycatcher (E. t. extimus), although other countries in Central America may also be important for the subspecies.

AB - Documenting how different regions across a species' breeding and nonbreeding range are linked via migratory movements is the first step in understanding how events in one region can influence events in others and is critical to identifying conservation threats throughout a migratory animal's annual cycle. We combined two studies that evaluated migratory connectivity in the Willow Flycatcher (Empidonax traillii), one using mitochondrial DNA sequences from 172 flycatchers sampled throughout their winter range, and another which examined morphological characteristics of 68 museum specimens collected in the winter range. Our results indicate that the four subspecies occupy distinct but overlapping regions of the winter range. Connectivity between specific breeding and winter grounds appears to be moderate to strong, with distributions that suggest migration patterns of both the chain and leap-frog types connecting the breeding and nonbreeding grounds. The Pacific lowlands of Costa Rica appear to be a key winter location for the endangered Southwestern Willow Flycatcher (E. t. extimus), although other countries in Central America may also be important for the subspecies.

KW - Empidonax traillii extimus

KW - Migratory connectivity

KW - Mixed-stock analysis

KW - Southwestern Willow Flycatcher

KW - Winter distribution

UR - http://www.scopus.com/inward/record.url?scp=80052390938&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052390938&partnerID=8YFLogxK

U2 - 10.1525/cond.2011.090200

DO - 10.1525/cond.2011.090200

M3 - Article

AN - SCOPUS:80052390938

VL - 113

SP - 608

EP - 618

JO - Condor

JF - Condor

SN - 0010-5422

IS - 3

ER -