They need colors so they can find a mating partern
Yes, you can. All you need to do is upgrade your nook.
Birds can see in color and they see colors of ultra-violet light. There are species of birds that seem to prefer specific color.
None
no
No. Birds see color. This is a necessary adaptation for humming birds, which get their nutrition from flowers.
pink
All birds need to see color so they can distinguish their food from the background and also so they can recognize predators easier. Birds have amazing vision in ALL categories-color, distance, up-close, movement, panoramic, etc.
blue gray
red
Birds need a lot of food for energy.
Color is of great significance for birds as it has survival value . It helps to camouflage as green color of a parrot is not visible to predators when in leaves.
Yes birds do need beaks and feathers.