Walkthrough: Mission 20
Go over and talk to Hanna who is by the chicken coop in the barnyard. She will ask you to race against Otis in putting the chicks into the coop. The best way to win at this game is to shoot from the far targets but it's risky because Otis will squirt you, making you drop your chick. However, keep in mind that you can also squirt Otis, making him drop his chicks.