Lately it's been cold. Cold enough that my car window has frost on the inside, as does my house and many other places that have breathing beings inside creating moisture on very cold windows. Frost seems to form in many patterns. Here is the feathery type as seen below on my bedroom window in the morning.
There is also a swirly type as seen on this chicken coop door. It's not my chicken coop door, but I wish it were, because I think it is a beautiful door with character. As always click on the photos if you want to enlarge them.