The martins are trickling in from the far south (Brazil) these days, and our colony is filling up. We had 42 cavities (gourds) last year, and we had 39 martin pair nesting and fledging babies.
For this year we added a rack, so we now have a total of 70 cavities. It’s hard to count, but my estimate is about 60 pair so far. So we’ll see if everything fills up.
For more information about Purple Martins, this is a link to the Purple Martin Conservation Association.