Do interspecific image-based ageing guides produce accurate estimates of nestling ages? – progress toward development of a generalised ageing guide

摘要: ABSTRACTImage-based ageing guides of passerine nestlings can produce accurate age estimates. If different species develop similarly, but timing development differs, creation a generalised image-based guide for use with multiple is justified if estimates be corrected to account such differences timing. To explore this idea, inexperienced participants used an Tree Swallow Tachycineta bicolor from images known-age nestling Eastern Bluebirds Sialia sialis and House Wrens Troglodytes aedon. Participants also Wren Bluebird (n = 54 total 2565 estimates). Ages bluebirds were generally underestimated the swallow wren guides, while ages wrens overestimated blu...