about 9 cm
Could you please tell us the location where you saw it, and the color, size and other information about the bird? The answer could be different for different countries, continents, etc., and we do not know where you are.
During which two years was the average finch beak size nearly the same?
Size of body part, For example, the finch can have a small beak, or a big beak. If their parents had small beaks, then they will probably have a small beak.
Worms, Fish, Nectar, and Insects.insects
Anything that can vary, pretty much. Beak size Beak shape Body size Body shape Wing size Wing shape Feather color Eating habits Mating habits etc, etc.
go on google.ca/images
humming bird
How big is a red eyed tree frog's brain? Then red eyed tree frogs brain is the size of a golfing bal.
about the size of an average person's pointer finger print or thumb print
short, wide, pointed, medium-length, chisel-shaped, sharply hooked, beak with pouch, long
Galapagos finches showcase natural selection principles: variation in beak size reflects genetic diversity among individuals; those with beaks suited to the available food sources survive (survival of the fittest); over time, the population's average beak size may change as those with advantageous traits pass them on to offspring (reproductive success).