The is the main color of the bird?
Answer the question with just one word or a short phrase.

yellow

What colors are the birds?

yellow

Is the bird about to fly away?

no

What kind of bird is this?

yellow

What color is the bird?

yellow

What is this bird on?

branch

What is the bird sitting on?

branch

What color is the little girl?

yellow

What color are the wings?

gray