Back in mid-September I noticed that a large field across the street from our local library had been mowed in a piebald pattern, with substantial remaining patches of tall grasses and weeds. As I turned the corner, I was delighted to see the field from another angle:
The patch I have highlighted with the yellow arrow is a large stand of milkweed. Whoever mowed this field did so with the express purpose of allow any remaining Monarch butterflies there to complete their pupation and head toward Mexico.
This week the patch is still intact and the milkweed is releasing its seed. I'm wondering now whether these remaining patches of grasses and weeds will remain up throughout the winter to serve as refuges for small mammals and other critters.