I am planning to go to Inner Mongolia, an autonomous region of China, next week.

I have been to Outer Mongolia.

I have been to Chicago.

The Paleogene period was a very important time in the history of the Earth.

The Ministry of Agriculture announced new measures to prevent the outbreak of avian flu.

I saw a goose in the park.

I saw a beautiful female bird in the park.

Every morning, a meadowlark comes to sing in my garden.

I often enjoy bird watching in the park on weekends.

The legend of the thunderbird is deeply rooted in ancient mythology.