Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

GeoTreesearch


Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

(260 KB bytes)

Title: Adaptive perch selection as a mechanism of adoption by a replacement Bald Eagle

Author: Grubb, Teryl G.; Forbis, Larry A.; McWhorter, Marta; Sherman, David R.

Date: 1988

Source: Wilson Bulletin 100 (2) 302-305

Publication Series: Miscellaneous Publication

Description: Replacement of lost mates within the same nesting season has been recorded in 26 raptor species (Newton 1979). Only three species (Cooper’s Hawk, Accipiter cooperii; Northern Goshawk, A. gentilis; and Peregrine Falcon, Falco peregrinus) have exhibited full adoption, i.e., incubation of eggs and/or rearing of young by an unrelated, replacement mate (Rohwer 1986). Neither mate replacement within the same season nor adoption has been recorded for Bald Eagles (Haliaeetus leucocephalus). Herrick (1932) describes two Bald Eagle mate replacements of 11 and 14 weeks’ duration, but both occurred over winter (October-February), prior to nesting. Adoption may be adaptive for long-lived species, through establishment of a pairbond for future seasons, if: (a) following mate loss and nest failure, renesting within the same season is unlikely; (b) the probability of starting the next breeding season with an established pairbond is increased with adoption; and (c) experienced pairs tend to have higher breeding success than new pairs (Rohwer 1986).

Keywords: Bald Eagles, Haliaeetus leucocephalus, adoption

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • You may send email to rmrspubrequest@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Grubb, Teryl G.; Forbis, Larry A.; McWhorter, Marta; Sherman, David R. 1988. Adaptive perch selection as a mechanism of adoption by a replacement Bald Eagle. Wilson Bulletin 100 (2) 302-305

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.