169. Wilson's Warbler

Wilson's Warbler (Cardellina pusilla) is a migrant breeding bird here at Leaning Oaks.  It  arrives in early April and our latest records run into the first week of October. In spring we hear them before we see them, they have a distinctive song a series of descending loud notes unlike any other warbler we have.  This is a warbler of thickets and understorey shrubs.  Their nests are usually at the base of shrubs, nestled in mosses. These photos were taken yesterday, we had a small fallout of warblers in the yard with Wilson's and two subspecies of Orange-crowned Warblers gleaning insects in the Ocean Spray and Garry Oaks.