The Last Winter Bird

Today it nearly reached 90F, and many waves of plants have flowered.  We're most of the way through the first brood for many local species.  And we've had our battering of spring thunderstorms.  In so many ways, summer is practically next door.  Yet today I spotted the holdout here.  The White Throated Sparrows are still around.  Or at least one is.  And I have heard this species' distinctive song.  Every year these sparrows are tardy migrants, holding out until almost May.  I'm hardly bothered because their marvelous song makes springtime a bit more complete.  But it seems just as wrong that a winter visitor has not packed its bags.  Should be gone soon!