Birds can't smell???
Yea ok
They did a study on homing pigeons and how they couldn't find their way back home when they disabled their sense of smell.
I am sure Kiwis find worms by psychic powers. Vultures just know or feel when things die...
They will come back year after year. Thats a tough situation. Remember they hate the smell of humans, if you can manage to get up there messing up their nest and rubbing your hands all over it or even whew peeing on it will have them move on permantly. If there is already eggs or chicks thats...