Hello, 'The bird is a bright colour' is better. However, it would be even more natural to see 'The bird is brightly coloured'. I hope that helps, Christine

Hey markhu26! The correct option is: This bird has a bright color. Color is one of the characteristics that the bird owns, so you are talking about something that he has. Color is a noun, and bright is its adjective. What is bright in this sentence? The bird's color. To use "is", like in the first sentence, you have to put an adjective for example: This bird is blue This bird is a rare specie You can't say "This bird is a bright color" because it is not a color. It has a color. I hope this helps!