Ocelots spawning in the hundreds

On my server I made the map and next to the jungle there is a bit of grass where the trees fade out. When I log in for the first time there are thousands (literally) of ocelots. I used WorldEdit and did Ebutcher and it killed 1,257. I then waited 5 minutes and killed another 750 and then again 642. They just keep spawning in their hundreds. Below is a picture of just a couple but the density of them shows how many there are: http://i.imgur.com/26bWwPk.png If you need to come check the server or something, Please DM on here or Twitter (@Sir_Deaf) because It's a private server and I don't wish to give out the IP 🙂

Thanks a lot.