So does @Ponypoor ! And did you know they are a Canadian invention? Some poor Canuck by the last name Robertson finally got fed up stripping Phillips and Flats and decided to try a square@Kris5902 does: Robertson screws!
The ones available locally (deck/exterior screws, anyways) are hex-head screws.

I don’t have chicken taxes today, and I missed Sunday for emergency fencing so this will have to suffice. We have a name! Ciaran (Keer-an) literally crawled up and slept on my lap the other day, Sunday or Monday, I forget which… both days were pretty awful, but this made it better