IT may be of interest to put on record the fact that on Sept. 21 I saw a quite fresh-looking specimen of the Comma butterfly (Polygonia c-album) feeding at Sedum spectrabile in my garden here. My wife ...

Many of the changes that we expect to see in April involve critters that were not with us in winter. We look forward to the return of many migrant birds. Each day, more come back from a winter farther ...

I HAVE just seen the correspondence in NATURE for Oct. 31 regarding the Comma butterfly in England, and it occurs to me that some observations I have made in the south-western parts of the country may ...