However, we also hear the loons making the distress call in the middle of the night. As you know they have several calls. Also, like most birds, one call can be used for several reasons. I think the loons are calling at night for the same reason a robin sings. It is communicating to other loons and to other birds.
Loons calling at night is very normal.
The past several evenings, I have watched hummingbird moths feed on my petunia flowers. What can you tell me about this moth - life cycle, flowers they are attracted to, etc. The hummingbird moth is one of several moths that will hover at flowers to sip nectar. The petunia is a flower that has a long nectar tube behind the flat flowers. Take a look behind each flower to see this long curved tube that contains the nectar.