…in fruit flies that is: (oops link broke)
after mating, females still slept deeply at night, but ditched the usual siesta in favour of extra foraging and searching for places to lay her eggs,” he says. “This behaviour lasts for around eight days – and our research findings suggest that this change is not by choice.
And so the fruit fly is confirmed to be a prisoner of its own biology, like everybody. Article also contains this gem:
Fruit flies are a good model for looking at sleep behaviour in humans as they exhibit many of the hallmarks of mammalian sleep. For example they sleep deeply at night from which they’re difficult to rouse and they have a preferred sleeping posture. If kept awake through the night, they exhibit tiredness the next day; if fed caffeine, they stay awake, and they become drowsy if given antihistamines.
I find it difficult to avoid anthropomorphising here.
Anyway, aggregating weird science stories like this is the kind of thing that’s made us the #1 animal sex facts site on the web.