These birds are half the size of most other herons, but they are very fast flyers. I was able to catch them in flight because they gave me so many chances. The small flock was chasing each other continuously.
It turns out even though small they are fiercesome predators and don’t even get along with members of their own flocks. Must be true I found it on the internet.
After photographing them, about 150 images, I finally had these four. And the one below of one catching his breath.