At the Aviary, with the Raptor, get to the top of the level. Reach the ptranadon nest, and move down until you reach a multi-health, then move back up to the nest. Move to the right of the nest until you reach the limb of the tree that moves down. Jump up three times while you are directly below it. Move left, kill the army guy and ove left as far as you can. Jump, and you will be rewarded with a life. Repeat until you have enough lives to finish the game. Warning your game will screw up if you have ten lives.