Natal and Adult Dispersal of Red-eyed Vireos in a Large Southern Ontario Forest

Abstract

We report re-encounter rates and dispersal distances of Red-eyed Vireos (Vireo olivaceus) re-encountered 1 year after banding in a large forest (∼ 4,600 ha) in southern Ontario, Canada. We re-encountered 12 (11%) of 109 banded individuals. Dispersal distances ranged from 40 to 9,870 m and were longest for hatch year (HY) bandings (median = 4,970 m, n = 3). Distances were similar between other age classes (SY: median = 225 m, n = 4; ASY: median = 220 m, n = 5), and males (median = 220 m, n = 9) and females (median = 250 m, n = 3). Our re-encounters of banded Red-eyed Vireos provide information on dispersal, detection rates, and methodology that could potentially improve future marking efforts and apparent survivorship estimates.