What or who does this poo? Belong to?

[pooppatrol]

Okay Mumsnet this isn't something I ever thought I would post 😂 but here we go...
Upon opening my DD's blinds this morning I discovered what resembles a tiny grey/white poo (Is it or is it something entirely different?) on her windowsill. (See picture) What is it and where did it come from? It's surely too big to be a spider? And it doesn't look like something from a rodent, so it's a mystery. Anyone?

Looks a bit like a bird poo to me. Could a little bird have been in the house? Or has the window been open?

@MyBedIsMySpiritualHome that's what DH thinks too, the window was open yesterday but only slightly, I'd say about an inch, is that enough for a bird to get in and out of?

Yes definitely 😁

probably popped in to look for spiders and then popped out again.

@MyBedIsMySpiritualHome oh mystery solved then! I just assumed that if a bird got in it wouldn't know the way back out but I suppose they are smarter than I'm giving them credit for 😂