What kind of bird is the size and colour of a rook but with scarlet wings and red and yellow beak?

The bird you're describing sounds like a Scarlet Macaw, which has vibrant red and yellow plumage. However, macaws are much larger than rooks. If you're looking for a bird that resembles a rook in size and color but has scarlet wings and a red and yellow beak, it might be a fictional or rare variant, as no known bird fits this exact description in the natural world.