Simplify the following text for a Grade 9 native English-speaking person.
Original: Kookaburras usually eat small animals : small mammals ( like mice ) , insects , small birds , lizards and snakes .
Simplified: In the wild , kookaburras are known to eat the young of other birds and snakes , and insects and small reptiles and even other small birds , such as finches if they are lucky enough to catch them .