Right now, the article says that polka-dot sparrows only live in North America. Is that true? I thought that there were polka-dot sparrow colonies in Central America too. What's the source for the claim about North American polka-dot sparrows?
Right now, the article says that polka-dot sparrows only live in North America. Is that true? I thought that there were polka-dot sparrow colonies in Central America too. What's the source for the claim about North American polka-dot sparrows?