Broad wintering range and intercontinental migratory divide within a core population of the near-threatened pallid harrier

Julien Terraube, Francois R. Mougeot, Thomas Cornulier, Ashok Verma, Andrei Gavrilov, Beatriz E. Arroyo

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Aim To identify the migration routes and wintering grounds of the core populations of the near-threatened pallid harrier, Circus macrourus, and highlight conservation needs associated with these phases of the annual cycle. Location Breeding area: north-central Kazakhstan; Wintering areas: Sahel belt (Burkina Faso to Ethiopia) and north-west India. Methods We used ring recovery data from Kazakhstan and satellite tracking data from 2007 to 2008 on six adults breeding in north-central Kazakhstan to determine migration routes and locate wintering areas. In addition, one first-year male was tagged in winter 2007–2008 in India. Results Data evidenced an intercontinental migratory divide within the core pallid harrier population, with birds wintering in either Africa or India. The six individuals tagged in north-central Kazakhstan followed a similar route (west of the Caspian Sea and Middle East) towards east Africa, before spreading along the Sahel belt to winter either in Sudan, Ethiopia, Niger or Burkina Faso. Spring migration followed a shorter, more direct route, with marked interindividual variation. The bird tagged in India spent the summer in central Kazakhstan. Half of the signal losses (either because of failure or bird mortality) occurred on the wintering areas and during migration. Main conclusions Our study shows that birds from one breeding area may winter over a strikingly broad range within and across continents. The intercontinental migratory divide of pallid harriers suggests the coexistence of distinct migratory strategies within the core breeding population, a characteristic most likely shared by a number of threatened species in central Asia. Conservation strategies for species like the pallid harrier, therefore, require considering very large spatial scales with possibly area-specific conservation issues. We highlight urgent research priorities to effectively inform the conservation of these species.
Original languageEnglish
Pages (from-to)401-409
Number of pages9
JournalDiversity and Distributions
Volume18
Issue number4
Early online date25 Aug 2011
DOIs
Publication statusPublished - Apr 2012

Fingerprint

Circus macrourus
Kazakhstan
bird
migration route
breeding
India
Sahel
Burkina Faso
birds
winter
Ethiopia
breeding sites
breeding population
Caspian Sea
annual cycle
Niger
population characteristics
Central Asia
coexistence
Sudan

Keywords

  • circus macrourus
  • conservation
  • Kazakhstan
  • migration strategy
  • migratory divide
  • satellite telemetry
  • wintering areas

Cite this

Broad wintering range and intercontinental migratory divide within a core population of the near-threatened pallid harrier. / Terraube, Julien; Mougeot, Francois R.; Cornulier, Thomas; Verma, Ashok; Gavrilov, Andrei; Arroyo, Beatriz E.

In: Diversity and Distributions, Vol. 18, No. 4, 04.2012, p. 401-409.

Research output: Contribution to journalArticle

Terraube, Julien ; Mougeot, Francois R. ; Cornulier, Thomas ; Verma, Ashok ; Gavrilov, Andrei ; Arroyo, Beatriz E. / Broad wintering range and intercontinental migratory divide within a core population of the near-threatened pallid harrier. In: Diversity and Distributions. 2012 ; Vol. 18, No. 4. pp. 401-409.
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T1 - Broad wintering range and intercontinental migratory divide within a core population of the near-threatened pallid harrier

AU - Terraube, Julien

AU - Mougeot, Francois R.

AU - Cornulier, Thomas

AU - Verma, Ashok

AU - Gavrilov, Andrei

AU - Arroyo, Beatriz E.

PY - 2012/4

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N2 - Aim To identify the migration routes and wintering grounds of the core populations of the near-threatened pallid harrier, Circus macrourus, and highlight conservation needs associated with these phases of the annual cycle. Location Breeding area: north-central Kazakhstan; Wintering areas: Sahel belt (Burkina Faso to Ethiopia) and north-west India. Methods We used ring recovery data from Kazakhstan and satellite tracking data from 2007 to 2008 on six adults breeding in north-central Kazakhstan to determine migration routes and locate wintering areas. In addition, one first-year male was tagged in winter 2007–2008 in India. Results Data evidenced an intercontinental migratory divide within the core pallid harrier population, with birds wintering in either Africa or India. The six individuals tagged in north-central Kazakhstan followed a similar route (west of the Caspian Sea and Middle East) towards east Africa, before spreading along the Sahel belt to winter either in Sudan, Ethiopia, Niger or Burkina Faso. Spring migration followed a shorter, more direct route, with marked interindividual variation. The bird tagged in India spent the summer in central Kazakhstan. Half of the signal losses (either because of failure or bird mortality) occurred on the wintering areas and during migration. Main conclusions Our study shows that birds from one breeding area may winter over a strikingly broad range within and across continents. The intercontinental migratory divide of pallid harriers suggests the coexistence of distinct migratory strategies within the core breeding population, a characteristic most likely shared by a number of threatened species in central Asia. Conservation strategies for species like the pallid harrier, therefore, require considering very large spatial scales with possibly area-specific conservation issues. We highlight urgent research priorities to effectively inform the conservation of these species.

AB - Aim To identify the migration routes and wintering grounds of the core populations of the near-threatened pallid harrier, Circus macrourus, and highlight conservation needs associated with these phases of the annual cycle. Location Breeding area: north-central Kazakhstan; Wintering areas: Sahel belt (Burkina Faso to Ethiopia) and north-west India. Methods We used ring recovery data from Kazakhstan and satellite tracking data from 2007 to 2008 on six adults breeding in north-central Kazakhstan to determine migration routes and locate wintering areas. In addition, one first-year male was tagged in winter 2007–2008 in India. Results Data evidenced an intercontinental migratory divide within the core pallid harrier population, with birds wintering in either Africa or India. The six individuals tagged in north-central Kazakhstan followed a similar route (west of the Caspian Sea and Middle East) towards east Africa, before spreading along the Sahel belt to winter either in Sudan, Ethiopia, Niger or Burkina Faso. Spring migration followed a shorter, more direct route, with marked interindividual variation. The bird tagged in India spent the summer in central Kazakhstan. Half of the signal losses (either because of failure or bird mortality) occurred on the wintering areas and during migration. Main conclusions Our study shows that birds from one breeding area may winter over a strikingly broad range within and across continents. The intercontinental migratory divide of pallid harriers suggests the coexistence of distinct migratory strategies within the core breeding population, a characteristic most likely shared by a number of threatened species in central Asia. Conservation strategies for species like the pallid harrier, therefore, require considering very large spatial scales with possibly area-specific conservation issues. We highlight urgent research priorities to effectively inform the conservation of these species.

KW - circus macrourus

KW - conservation

KW - Kazakhstan

KW - migration strategy

KW - migratory divide

KW - satellite telemetry

KW - wintering areas

U2 - 10.1111/j.1472-4642.2011.00830.x

DO - 10.1111/j.1472-4642.2011.00830.x

M3 - Article

VL - 18

SP - 401

EP - 409

JO - Diversity and Distributions

JF - Diversity and Distributions

SN - 1366-9516

IS - 4

ER -