More than half of diet is insects, including beetles, caterpillars, true bugs, grasshoppers, cicadas, and many others; also eats spiders, sowbugs, earthworms, snails, crayfish, and sometimes lizards and frogs.

Are brown thrashers aggressive?

An aggressive defender of its nest, the Brown Thrasher is known to strike people and dogs hard enough to draw blood. ... The thrashers do put up some resistance, often rejecting cowbird eggs that are laid in their nests.

Do brown thrashers kill other birds?

Brown thrashers are generally inconspicuous but territorial birds, especially when defending their nests, and will attack species as large as humans.