Plants went in ground little early

With unusually warmer weather, I planned on putting some seedlings in the bed. I did transplanted some tomatoes, hot peppers and eggplants on May 2nd. Tomatoes and peppers in the blue pots are doing ok, except that the 2nd row in the bed, some pepper and eggplant transplants disappeared. I am not sure what happened to them, if any sparrows plucked them ?(we have been seeing some sparrows searching for food in the bed) or they are gone with the winds we had.

Today the night temperatures are going almost before freezing. I am keeping my fingers crossed for tomatoes, but the blue pots came indoors. I still kept each of the transplants aside to plant them after the official frost date