Why aren`t house sparrows as big as geese?
(WorldNews Norway)

IMAGE: Henrik Jensen, an associate professor at the Norwegian University of Science and Technology releases a bird in Namsos in an area where house sparrows were confirmed to exist. view Why are house sparrows the exact size they are? Why aren`t they hummingbird size or as large as geese? It sounds like a strange question to ask, but it`s actually an overarching question of evolution. ......