Eastern Commas and Mourning Cloaks are typical overwintering butterflies, and they are fairly regular in sunnier sections of woodland trails these days. Often they are just sunning, especially on a cool day....
Another early surprise was this Swamp Darner, about the largest dragonfly to be found in southwestern Ontario. I knew several had been seen a day or so earlier, so it wasn't a total surprise. Normally they don't appear in Ontario until May, although they are known to occur in April in Ohio. They are migratory as well, so likely also caught a good southerly wind. The particularly cool morning on this day kept it quite motionless for a convenient photo op.
Warblers have not been plentiful yet, but that will change. I only saw this one migrant Yellow-rumped Warbler on my most recent visit. It was searching for insects at the edge of a wetland.
Horned Grebes are plentiful, and some are in nicely attired breeding plumage.