Got it: You need fireballs, at least 10 because you will likely need multiple tries: Get as many points as you can from the first two hatchlings/critters then shoot the last one with a fireball. Or try different combos, like shooting them all with a fireball and knocking the rest down from the top. Those humming birds are your moneymakers. Hate levels relying on luck and sadly this is one of them :(