You run along the coast, where the straight line of spawn points are, and kill the packs one by one. They respawn usually within 1-2 minutes, so keep going up and down this coast line.
The packs looks like this:
The seagulls are very hard to reach as a melee character, so I would strongly recommend a character with low/non CD AoE spells (Like Shadow Priest or Balance Druid).
Where this spot shines is that you can farm this with several characters at the same time. If you are all in separate parties, you all get to loot the mobs and get equal amounts of gold. Remember to tag every single mob with low damage spells, then burst them down.
These eggs are frequently selling in my server for ~25g each. I was able to farm about 1000 eggs an hour, which equals about 25 000 gold per hour. This is of course dependent on the price of Wildfowl Eggs on your server.
Hope you guys can take use of this!