Today in Nature: A Migrating Catbird

October 7th: As fall gets serious, the birds are on the move. I came across this grey catbird at U of T today, where I rarely see anything but starlings, pigeons and sparrows. I suspect it is just passing through on its way to wintering grounds in the U.S.. It isn't alone - I haven't heard any redwing blackbirds lately, so they must have taken off for warmer climes, along with many of the other songbirds.