Lustre oddity pieces - Czech?

I keep finding pieces like those pictured here, usually just marked 'Foreign'. The bug jug here has no marks at all. Just a very flat bottom like it's been sliced off the wheel.
The one thing they all have in common is the very bright orange colour and high lustre glaze.
I found a vaguely similar jug that had Czechoslovakia but nothing else readable on it.
Do you know anything about this stuff? Where and when and who?
Thanks.

I'll move your bird pot to the comments, for comparison, because it's one pot per post unless it's obvious they are by the same potter, and it's not even certain these are from the same country or decade, let alone the same pottery.

I think it's either 1930s Czech or 1950s-70s Japanese.

They were my thoughts (only 30s-40s Japan) - but the two are worlds apart. It would be nice to drill it down some more.

I think you need a new camera

Ha! This is just the poopy one on my tablet. Not one I use for anything important.