When we purchased a trail camera earlier this year we were expecting to see the night wildlife we knew were in the neighborhood like rabbits and raccoons. We weren’t disappointed. As soon as we started recording the nighttime activity in the yard we captured all of these as well as mice, Virginia opossums and illegally roaming cats. What we really are hoping for is to record one of the neighborhood foxes visiting our yard but that hasn’t happened yet.
What has been a surprise and has gotten me intrigued is the repeat appearance of night-flying insects well after what I thought was the normal season for them. They’re too small to set off the camera themselves, but I’ve seen them frequently when an animal has triggered the video.
Here’s one where the raccoon waddling away at the top of the steps has started the recording. The critter can be seen swooping down and up at the top of the frame. The first image is at normal speed and the second is slowed down to one quarter speed. Sorry I had to resort to animated gif images, but I can’t figure out how to put videos into a post without subjecting you to more advertisements. The temperature at the time this video was taken was about 15°F/-9°C.
Here’s a one-quarter-speed shot of another sighting the following night, this time flying from the lawn area at the top of the steps in over the deck. The temperature at this time was around 25°F/-4°C.
So what’s flying around in the middle of the night, in below-freezing temperatures, when all the plants are dormant and there sure as heck isn’t any nectar out there to dine on? One of my BFFs is an actual entomologist. He suggested what I was leaning toward—that these are moths, probably in the family Noctuidae.
Fast-forward a couple of weeks and I may have observed a suspect in the case.
I spotted this beauty hanging on the screen of the kitchen window around 8 PM when the temperature was a balmy 37°F/3°C. I’ve tentatively identified it as Eupsilia morrisoni, Morrison’s Sallow, using iNaturalist’s computer vision identification application. Over several recent evenings I’ve deployed a primitive light trap I cobbled together in the back yard. It hasn’t accomplished anything but perhaps annoying or puzzling the neighbors. The weather has turned wet so I’m going to put off trapping attempts for a while. I was kicking around the idea of creating a better setup using UV light next year but maybe I’ll move that project up a bit and see if I can capture any other winter night flyers.
Have you ever encountered critters in winter you assumed wouldn’t be out? I’d like to hear about them in the comments.