Checking in on the Osprey

Good thing I went out today as the young birds are almost the size of the parent.  The one on the right is the adult or so I thought.  Looking at the other pics I can see another head poking up.  I am begining to think these are the 3 young.  There was an adult north of the nest in a dead tree calling to them.  I wish I could have seen the other adult too. 
Update ---Found a pic with 3 heads, I suspect these are all young birds.