South America is home to some of the most diverse bird species. Some have a hint of yellow about them, such as the Yellow-Crowned Amazon which is predominantly green but partly yellow and the Brown-and-Yellow Marshbird, which is brown except for a yellow breast. Some species of Elaenia native to South America are also yellow as are some cuckoos and the Caatinga Parakeet. The Yellow Warbler, a wholly yellow bird, is often seen in the northern parts of South America.

yellow to yellow brown yellow to yellow brown

yellow + brown = yellow ochre... i thought...

If you mix yellow and brown you will get a goldenrod yellow!

Hope this helps

Yes yellow is better than brown