I completely disagree with the OP's opinion.

What is the main clause of this sentence?

Gender identity refers to the gender that each individual recognizes themselves as.

Her eyelids are getting heavy, maybe she is tired.

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.