Skip to page content
USDA Forest Service

Research & Development Treesearch

Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help - We Participate  Government Made Easy

Global Forest Information Service

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

(202) 205-8333

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

Publication Information

View PDF (356 KB)

Title: Molt patterns, age, and sex criteria for selected highland Costa Rican resident landbirds

Author: Wolfe, Jared D.; Chandler, Richard B.; King, David I.;

Date: 2009

Source: Ornitologia Neotropical 20: 451–459

Publication Series: Scientific Journal (JRNL)

Description: Demographic studies within temperate latitudes often use molt and plumage-based criteria to differentiate age and sex classes (Bayne & Hobson 2002, Brown et al. 2002, Jones et al. 2004). Despite their critical nature (Pyle et al. 2004, DuVal 2005, Doucet et al. 2007), molt and plumage data derived from resident tropical species remain scarce (Dickey & van Rossem 1938, Diamond 1974, Foster 1975, Prys-Jones 1982, Pyle et al. 2004, Ryder & Wolfe 2009, Wolfe et al. in press). To advance our understanding of resident tropical avifauna molt, we studied molt patterns and plumage-based age characteristics for ten resident highland species commonly found in the northern cordilleras of Costa Rica. The following accounts summarize our findings on molt, aging, and sexing criteria. They are based on skin specimens obtained from museum collections and banding data from a study of bird ecology in coffee plantations and forest habitats in the Cordillera de Tilarán, Costa Rica (winter and spring of 2006/07 and 2007/08).

Keywords: Costa Rica, Cordillera de Tilarán, highland birds, age-related plumage, sex-related plumage, molt

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.



Wolfe, Jared D. ; Chandler, Richard B.; King, David I. 2009. Molt patterns, age, and sex criteria for selected highland Costa Rican resident landbirds. Ornitologia Neotropical 20: 451–459


 [ 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.