Little grebe

Finally went to see Colin today. He seemed ok if somewhat tired as all he did was sleep. His friend has moved onto the swan nest - very brave if i do say so myself. 
The cygnets kicked the coots off of their nest and sat on top of that, one at a time instead. A couple of them seem to be taking after their father and are turning very aggressive towards anything else and even with each other. 
Today's blip is the little grebe. Even these were arguing amongst themselves and chasing others across the pond. I'm not sure what is going on but every one seems a little bit grumpy.