Heard my first song sparrow on Mar 16th at Oriole park, now they are singing everywhere. I, too, saw a mourning cloak butterfly in the backyard, on Mar 18th and I have seen cabbage butterflies since then, during the hot weather.
I expect phoebes up next.
(I see someone has already seen phoebes and there are some sightings of killdeers.)
Yay.
