I have somewhat of a positive update on the two ducklings. They're still there, but the one doesn't have a fishing sinker attached to him anymore. I hope he didn't swallow it. Also, I didn't see any aggressiveness in the other one. In fact, they were very affectionate to each other and even laid their heads on each other's back while huddled together to keep warm. Plus, they actually foraged for food and I think both ate something. They're kinda watching the big adult Pekins, but keeping their distance.