Strange sound from changing 307 gears

Guys, I have been paying particular attention to some time, while low gears (I can't hear the sound at highs), when I change gears, it sounds like giggling, I can't actually describe the sound exactly, but it's a sound I haven't heard before.

In this weather I can make it from the cold, my vehicle is fastened in the car, I do not know the vehicle is automatic.