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 Pinyon Jay

 

Common Name:  Pinyon Jay (PIJA)

Scientific Name:  Gymnorhinus cyanocephalus

Global/Continental Conservation Status:  IUCN 2004 Red List – VU (Vulnerable)

National-level Conservation Status:  Nothing other than coverage by the Migratory Bird Treaty Act.

Key Reference(s):  BNA No. 605 (Balda 2002)

Distribution:  Breeds from c Oregon, s Idaho, c Montana, w South Dakota, and nw Nebraska south through California (primarily the eastern and southern mountains) to n Baja California, s Nevada, nw and e-c Arizona, c (probably also s) New Mexico and w Oklahoma.  Winters throughout the breeding range and irregularly from nw Oregon, s Washington, n Idaho, and c Montana south to se California, se Arizona, n Chihuahua, and w and c Texas, and east to w Nebraska and w Kansas, casually to North Dakota and to coastal California (including the Channel Islands) (AOU 1998).

Habitat Associations:  Pinyon-juniper woodland; in nonbreeding season also scrub oak and sagebrush (AOU 1998).

Source(s) of Research/monitoring Needs:  Arizona Bird Conservation Plan; Nevada Bird Conservation Plan; New Mexico Bird Conservation Plan; BNA No. 605 (Balda 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)
  • Third priority monitoring action – Conduct new winter surveys (PIF Monitoring Needs doc)
  • Study population status and trends for PIJAs ( Nevada )
  • Determine amount and location of mature pinyon-juniper woodlands in Arizona ( Arizona )
  • Research on populations other than those at the southern edge of their range; how different habitat types influence life history parameters (BNA)

Habitat Needs/Ecology/Life History

  • Social system of PIJA - why some individuals help & others don't, why some breed in 1st year and other don't, why some disperse and some don't, individual & kin recogition (BNA)

Effects of Management Practices

  • Effects of conversion of pinyon-juniper woodland on PIJA & associated species (BNA)

Landscape

  • Determine the effects of fragmentation, isolation and other landscape level effects on the productivity of PIJAs ( Arizona )
  • Study the relationship between PIJAs and the pinyon-juniper landscape ( Nevada )

Species Interactions

  • Testing the effectiveness of using PIJA as an umbrella species for managing pinyon- juniper avian communities ( New Mexico )
  • Role of insects & rodents as competitors with PIJA for pinyon seeds (BNA)
  • Coevolutionary relationship between PIJA and pinyon pines - influence of PIJA harvesting on seed size & production schedules (BNA)

Predation

  • Determine if Common Raven nest predation is a serious problem for PIJAs ( Arizona )

[Link to References]

[Link to PIF Bird Conservation Plans]

 

 

 


Home || What is PIF? || Que es Compañeros en Vuelo? || PIF Bird Conservation Plans || PIF Maps   || PIF Species Assessment 
Research and Monitoring Needs   PIF Newsletter || La Tangara || International Migratory Bird Day
PIF Regional Working Groups || Other PIF Resources || PIF Contacts