Well, Bluey and Junior went out for an hour or so yesterday morning, then went out again at about 5.15 yesterday evening. After over 2 hours (!), neither were back. 3.5 hours later, and home flies Junior. Well, at least s/he got home alone. No sign of Bluey all night.
I let Junior out this morning (I had a lie in, so it was about 7.50). I looked in the shed at about 10.15, and Junor and Bluey were back in the shed. It's almost as if Junior went off to fetch home Bluey.
I think I'm feeding them too much ;-D