Okay, had bird(s) popping onto the nestbox edge a couple of times today but didn't stay long enough to so much as zoom in on it/them.
However, about 1600h, Joli turned up in the nestbox with a meal, shorebird I think. A bit later in jumped a bird to pick at the remains and I thought it was Joli until I realized that our black/green bird had turned up again (remember yesterday morning?) and I got a look at the bird's band and guess who, Smiley from Grand Forks is back! So today we definitely have at least two birds downtown - Joli and Smiley. Yesterday we had three - a black banded male that never came near the camera so I'm pretty sure it wasn't Ivy, a black/green bird who I assume is Smiley and the black/red bird who we identified as Joli.
Actually, what I have noticed is that the non-resident birds are more than a little wary about the cameras - makes it easy to spot them in fact. Ivy, Princess and the chicks have no problems standing right in front of the camera - the "tourists" tend to say right on the edge of the outside-box-cam range, one of the reasons it takes along time to get their band numbers.