All three bears were on display just now, but Chinook was behind the fence, looking at her two friends as if she was very anxious to join them. I could only see her from the head up, peering through the fence at Kalluk and Tatqik, trying to figure out a way to get to them, so I couldn't tell if she still has the pregnant look or not. Kalluk seemed to be very intent on impressing her, which meant he first was laying flat on his back with his legs sticking up the air, and as he is not always a model of dignity, scratching himself, and this is when the camera decides to zoom in, then, in an unusually aggressive display for him, he got up and chased his sister around the enclosure, batting and snapping at her. I think this was all for the benefit of Chinook, showing her what a tough guy he is. Poor Chinook looked bewildered, but you could also see that she wanted to join her companions. As for Tatqik, I think she knows how to handle her brother, and if he gets too aggressive, she lets him know.