How to Unlock Pheasant Physics Achievement
There are two birds in the town. One is eating bread on the ground and the second one is on the roof of one building. The easiest one to reach is on the ground. Go to it, press “E” and then move to the closest air vent. Just get on it and press “Q”.
Note: One of the air vents is buggy for me. If it does not work, try another one.