AVIS-IBIS

Birds of Indian Subcontinent

Age Determination of Juvenile Blue Grouse by Primary Development

Publication Type:Journal Article
Year of Publication:1970
Authors:Schladweiler, P, Mussehl, TW, Greene, RJ
Journal:The Journal of Wildlife Management
Volume:34
Issue:3
Date Published:1970
ISBN Number:0022541X
Keywords:Dendragapus, Dendragapus obscurus, Phasianidae
Abstract:A technique for age determination of young Montana blue grouse (Dendragapus obscurus pallidus) based on measurements of actively growing juvenal and postjuvenal primary feathers of 17 pen-raised birds is described. When tested on 87 approximate known-age wild birds to 16 weeks, 95 percent of 116 determinations were within 1 week of the expected age. Supplemental characters for aging juveniles in the field are presented.
URL:http://www.jstor.org/stable/3798879
Short Title:The Journal of Wildlife Management
Taxonomic name: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith