I didn’t see anyone catch anything. Each bird probably followed the other thinking they knew of food.
So…the large bird is A Great Egret, there are 2 Snowy Egrets, and the dark bird is actually a juvenile White Ibis.
Catching multiple birds in the same frame is not always the best image. Unless the light, distance, and camera settings are all near perfect someone is not in focus (the 2 Snowy Egrets).