Do birds see in colour?
Answer: Yes, they do and they are even able to distinguish more colours than we humans, who can only see red, green, blue and multiple combinations thereof.
The birds are able to see yellow, just as they are able to perceive ultraviolet light.
Their 'UV light sense' is also thought to improve the birds' ability to navigate and this 'UV sense' also helps the birds to find food and a mate, as fruit, prey that move and plumage reflect the sun's UV waves.
When the kestrel hunts it uses its sharp sight and UV sense to locate its prey and rarely misses a tiny mouse in thick grass, for example.