I have no idea what this bird is. I noticed it feeding chicks in this hole in a tree! I took loads of photos. The bird has something green in its beak but I haven't deciphered that either! When I know what the bird is I will update the title. Those that know let me know!!
@borof thanks for your comments! It was bringing food back to the nest because I could hear the chicks. On a different photo, I think I have identified the food as human BBQ scraps! We were on a campsite!