I wonder if nocturnal creatures start coming out like bats.
My guess would be no, because nocturnal creatures would be asleep when it happens and so probably not even notice it.
My pets had an expectation of events to happen at specific times.
Dog would sit by the door and 'expect' to see $family_member arrive home from school/work. (noteworthy for those that had regular schedule and always got home about the same time.)
My last cat expected to be fed at the same time every day.
For the first couple of years I had my cat, my job & routine were identical every day. Wake at 6am, feed cat, goto work.
On weekends this bothered the cat so he would wake me up at 6:01 so he could get his food. I hated that he would never let me sleep in.
Fast-forward a few months to the daylight-savings change; and then at 5:01 he started expecting food. The damn cat had an internal clock that was very accurate.
So I am sure a lot of animals have internal clocks and don't solely rely on "% of sunlight" to determine behaviour.
It doesn't need light to work. (But light modifies it so after a few days it is synchronized with the local light-darkness cycle.)
So probably all the nocturnal animals that were sleeping in a dark shelter during the day missed the event.
From personal experience, though, most of us probably know that a bright light in the middle of the night can wake is even if we are nowhere near the point in our circadian cycle where we would be waking up. But a dim light, like a candle, probably won't.
So, I'd expect nocturnal animals in places that are already fairly dark, such as bats that live in caves, to probably sleep right through it, because it will only make a minor change to the light in the cave. Nocturnal animals that live in more exposed places might react, either to the change in light or to the change in temperature.
A bit of Googling indicates this may indeed be the case. Cave bats usually don't react. Forest dwelling bats have been seen to come out.
It would be interesting to do some experiments to see if it is the change in light or the change in temperature that is waking them.
Hives cannot survive long in high humidity, if the interior of a hive gets wet mold will set in rapidly so the bees will work extremely hard to dry the hive out after rain if it gets wet; which probably explains the instinct to hide and stay safe when its about to rain (or, much less often, eclipse)
Low-intensity lights/screens (compared to the sun) wreck havoc on our circadian rhythms, it seems plausible that it disrupts the (not just circadian) rhythms of other organisms as well.
Here is a thread with a graph of the spectrum:
I feel like this is such an American/Capitalist attitude.
It's fine! They'll be more efficient and collect more honey!
I'm pretty sure if I had to live with lamps shining on my face all night it would disrupt my circadian rhythm, regardless of when I naturally prefer to sleep.