Press ↑ to fly the bird upwards and ↓ to fly the bird downwards. The bird will slowly fly to the death zone because birds are stupid lol XD! Just make them fly on the dash pads that will fly across to make them go forward and away from the nasty death zone! (When the dash pads will come is random, so you would also need luck!)
I survived to level 2 without doing nothing lol