Mimidae includes thrashers, mockingbirds, and catbird. As their name suggests, these birds are notable for their vocalization, especially some species' remarkable ability to mimic a wide variety of birds and other sounds heard outdoors.
They tend towards dull grays and browns in their appearance, though a few are black or blue-gray, and many have red, yellow, or white irises. Many mimids have a thrush-like pattern: brown above, pale with dark streaks or spots below. They tend to have longer tails than thrushes (or the bigger wrens, which they also resemble) and longer bills that in many species curve downward.
They have long, strong legs (for passerines) with which many species hop through undergrowth searching for arthropods and fruits to eat. Their habitat varies from forest undergrowth to scrub, high-altitude grasslands, and deserts.
All known species build somewhat messy, bulky twig nests in dense growth, in most species on the ground or no more than 2 meters up. They usually lay 2 to 5 eggs that hatch in 12 or 13 days, which is also the length of time the chicks stay in the nest. Breeding usually starts in the spring or early in the rainy season, and many species can have two or even three broods per year. Most failures to fledge young are due to predation. Pairs often stay together for more than one breeding season