Similarly to real life, these greedy douchebags will try to steal your sandwiches, however if you are drunk enough, you can stay up into the late hours of the evening and have deep insightful conversations with these feathered friends as they simply stare at you in confusion and bark in bird language. In return they will bring you magical fish as a reward.
When using find some fish
Place your bird on the ground
Set hunt and retrieve
Use hatchet and you'll get PFM from the fish it brings back once you're done getting fish set neutral and pick up your bird.
Bola it, then use a slingshot to body shot it. Don't head shot it; it'll die within 5 hit of the slingshot. I used a crossbow and two headshots and dead. Use fists, sling, or boomerang to knock it out. Good luck, 2 2.5x Coels should suffice for the taming.
If you see one that you want to tame walking around on land, throw a tent on top of it, and get your bola ready. It can help keep them trapped. However they can escape if you're not quick enough with the bola, also they can destroy the tent if they start to attack it. I've tamed them many times this way, so it can be done.
When I set out to tame one of these, I bring a storage or make one near the location of the bird, I put all my valuables that are on me & my flyer into storage(including the kibble) until it's knocked out. To avoid being robbed & having my things destroyed.