They can often be found off the docks in Blackwater, they usually appear between 11:00am and 12:00pm game time. Feathers are worth $3 each in West Elizabeth and Nuevo Paraiso and $5 each in New Austin. The best way to kill a seagull is to wait on the pier with a Rifle equipped. Their loud squawks will alert its presence and a quick look in the sky will find you one. They are usually perched on wood beams and on the tops of the storefronts, a very easy target to shoot.