I think it's more likely that this is a ghost, but no-ones helping from that forum and I'm nervous as heck.

I was playing with three street urchins in my street a few minutes ago. We were sitting down talking when something started making "whoom" noises from the house opposite us (It sounded a bit like a cat x bird hybrid, but was very obviously human). Just for fun, we started repeating the noise, and it was repeated back to us. The last few "whoom" noises were closer and the last seemed like it was coming from the front of the house. We continued making "whoom" noises but they weren't repeated for a few seconds, when all of a sudden there was a small "whoom" noise behind me at my neck. We all jumped with fright and jittered for a bit before the youngest made us take him home.
When both of them were home I had to walk home alone. To calm my nerves I whistled a Cat Stevens tune (badly) and I could hear the grass rustling like someone was stepping on it but when I turned back no-one was there. The grass sounded like someone was running on it and just before I reached my gate the tree above it rustled like someone jumped into it. I ran through my door and immediately jumped on the computer. What is this, and how can I get rid of it?

No, I haven't been drinking, smoking, I don't hullucinate and I'm sane, before anyone asks.

Hi,

Not sure what is that but i ve heard something like that myself....One night i was sitting in front of my pc and searching around , when i heard something like cat-bird hybrid from outside...
When i asked my Grandmother she said it is an evil spirit and i did good that i didnt step outside....I never heard it since then ...did u ?

To be honest, none of us can say exactly what is going on. In any case, whatever it was is harmless. The more upset and scared you become, the more your imagination kicks in. Not to worry, just dont mimic it or acknowledge it again, and you should be fine..JN

As JustNormal said, "The more upset and scared you become, the more your imagination kicks in." If you hear from this thing again, then it's a problen and you should tell someone.

have you ever heard the ghost story of the lechusa its an old gost story from mexico that a witch posses a owl and perks in a tree whistling and if you whistle back then the bird would follow you repeating everything you whistle. its a true story i have actualy encountered one my self while drinking with my friends at a house in the country and the scary part is that the bird followed me home then another time at my grandfathers ranch and they say that if you hit it, shoot it, or stab it it will not die the only way to get it to leave you alone is if you cuss it out. your story sounds as if a lechusa was following you because the can walk and run like a human but they can also fly like and owl. some other ways you know if its a lechusa is that it will laugh like a gigle of an old lady or a little girl. they say if you look at the face you can see the face of a human or the face of the witch but dont look into the eyes.

I can't even begin to imagine what a cat/bird hybrid would sound like - yet you say the sound was obviously made by a human? I don't get it.

I guess she means a sort of loud cawing-type bird. Maybe like a crow and a shrieking cat?

These are just guesses, to be honest. Aside from that, this was an interesting read, but definitely difficult to imagine. The best way I can contribute is by saying, ignore it and don't let it bother you. If it continues to occur, then maybe do some research and such as to the potential causes. But my problem with that is imagining such a thing occurring. If it happened to me consistently, I would try capturing it on some sort of electronic device. Especially since others around you heard it as well (giving, at least you, enough evidence that what you heard was real).

I'd say it was a bird.. some varieties make some damn creepy noises.. plus that would explan how it moved around without you seeing it. I'd say the grass rustling was unrelated... the thing is nature makes noises all the time.. attributing the sounds of nature to the paranormal isn't very healthy