I was attacked by one while mining flint and it stole my pick. Then it got my pike when I went to fight. That's when I noticed noticed that it didn't actually "steal" what was in my hand, but just disarmed me and dropped it in the ground. Check the ground and see if your stuff is there after they attack you. My pick was laying there near the spot of the initial attack.
I hate this seagull it just stole my wyvern egg next day tried to kill him it stole my fertilized giga egg i hate those keep away from them or just try to shoot it out of sky so you can go and be safe from this egg stealer
Literally Satan, kill it before it steals all your items your children and your dog. I don't care if it's good for gathering fish, I need a genocide of these guys after they stole my mastercraft crossbow and pick.