something hollowing out green tomatoes

[canuck]

I have grown tomatoes for many years now and never had a problem like this--In my hanging baskets of tomatoes something is eating large holes in my tomatoes and hollowing them out. The holes are about half an inch in diameter and perfectly round. I haven't seen any bugs around them or on them and would like to know what is causing this and how to fix it.

[Zap]

Could be birds, searching out moisture. Has it been very dry where you are?

You could consider putting in a bird bath so they can get water without attacking your tomatoes.