I think the caps and butts I provided on the balcony are nearly gone. You can see the birds spending a little more time looking around the balcony before they locate something they can deposit.

I'm not going to provide any more caps/butts until 01-JAN and hope that one of the birds brings something I didn't provide to deposit by then. If not, I'll stay on Stage 4 for another month or so and try again in FEB.