Double Crested Comorant... I think.

Today, we lost our six year old Great Dane, Opie. We always said we would not let our animals suffer, we made the best decision we could. I didn’t want to use him as a blip.

I did a little research on this bird, if someone knows better what it is, please speak up. They just appeared near our pond, I have never seen them before and there was six of them!