Seagull feeding frenzy Close Up! 

There was a Herring Gull that used to show up at a place I once worked at. It's entire right leg was missing and it looked to have been missing for some time because the bird was a large adult that was healthy and in good condition and it would still chase off Buzzards and Hawks so losing a leg didn't slow it down at all. It kept on showing up year after year which was always nice to see.

I don't think it's a short leg it looks more like an injury to me

Anti bird netting on buildings or fishing line. They get caught in them and either die or lose a limb trying to escape 😢

Right, what's your point? It's not a showcase of varied Gull species.