The state bird of Montana is a very beautiful bird. The male and female Western Meadowlark both look similar. The Western Meadowlark is a very brightly colored bird. Their heads are streaked with a dark black line. They also have a black āvā on there bright yellow chest. The Western Meadowlark eats meat, plants, insects, worms, snails, spiders and roadkill. The western meadowlark could live in Western Central USA, Southern Canada, North Mexico, Great Lakes, Pacific Ocean, Open Grasslands, Prairies, Fields, and Pastures. The Western Meadowlark size is 3 oz and 8.5 to 11 inches tall. Montana adopted the Western Meadowlark as the state bird in 1931. The adult Meadowlark is easy to spot. The adult is about 9 inches (23 centimeters) long.