Wild Wednesday: Nesting

This morning I went to see if the Great Blue Herons had returned to their nests yet and I found several of them staking their claims.  I often wonder if the individual herons go back to the same nest within the rookery every year.  There are at least 20 nests in 4 trees.  My extra shows some of the nests.  Can you spot 6 herons in the extra?  They are well camouflaged and I couldn't see all of them until I zoomed in.  Many thanks to Cailleach for hosting the challenge! :-)