Prothonotary warbler (Protonotaria citrea) COSEWIC assessment and status report: chapter 1
Assessment Summary
Assessment Summary – April 2007
Common name : Prothonotary Warbler
Scientific name : Protonotaria citrea
Status : Endangered
Reason for designation : In Canada, this species breeds only in deciduous swamp forests in southwestern Ontario. It has shown an 80% decrease in abundance over the last 10 years and its current population is between 28 and 34 mature individuals only. Threats include loss and degradation of breeding habitat, loss of coastal mangrove forests in Central and South America where the species winters, and disturbances of habitat that result in increased nest site competition with House Wrens and increased nest parasitism by Brown-headed Cowbirds.
Occurrence : Ontario
Status history : Designated Special Concern in April 1984. Status re-examined and designated Endangered in April 1996. Status re-examined and confirmed in May 2000 and in April 2007. Last assessment based on an update status report.