Unless they are using bait, it’s not fishing. They see a fish in the water and pick it up, big deal.
I saw a nature program several years ago about a heron in England that did learn how to use bait to fish.
It was in a park where kids would feed bread to the ducks.
I guess the heron noticed that bluegills would gather to also grab some bread scraps.
The heron learned to fly in and grab a piece of bread and fly to the other end of the pond. It would then put pieces of bread in the water and grab the fish when they came up for it.
It wasn't baiting a hook or using a rod but it was using bait to get fish.
Lets see em cast with an open face reel.