Altra's Comments

Remember to fly around a bit.

On my Server, Die Aldor-EU, a number of people were sitting around waiting for a Guardling to pop up at their feet. I logged in, fluttered around a bit and caught a blue one (H/S-breed) close to AQ40. A few meters closer to the entrance a second Guardling was idling around, waiting for a captor, until a friend of mine arrived. I did not even have to engage it.

Admittedly shortly after somebody else flew past, so not every one is camping.

Korendirs advice worked like a charm for me. The hare does not seem to spawn immediately after killing/battling the rats, but I always found some sooner or later, sometimes respawning in the very same spot I had fought another in the same cycle.

Apparently the rats respawn only once all possible hares have been dealt with, so when their corpses can be seen, a hare could possibly be spawning somewhere. But: Hares do eventually despawn, so don't take to much time.

Still need a rare one though.