Hi The Hogfather
You’re absolutely right, hedgehogs don’t normally come out during the day unless something is amiss. But that might include dehydration and we might not be there to see, so I always err on the side of caution and leave water out all day.
There are some exceptions to being out during the day, i.e. prospective mother nest building, or taking a break from youngsters if it’s really hot. But they would probably stay under cover if it was the latter. Also in the Summer, they are sometimes about early in the morning or just before dark.
Yes, please do let us know if there are hoglets. Always lovely to hear about!