Bird come in all sorts of shapes and sizes. Some are small and colorful (like a hummingbird) while some are big and black (crows); just because one particular bird has very fine dark feathers and webbing and a snoat doesn't mean it's not a bird - just a strange one.
Look at this dog. It may look like a panda but it isn't. Just like a bat looks like a mammal but it isn't.
God said it. I believe it. That settles it.