Ok, I'll give it a go. Pic 1: Nicely composed and sharp. However, the tree trunks on the left, just below the house, are lacking in detail as they're too dark.
Pic 2: Water is sharp with nice detail. But the bird is way too soft overall--nothing sharp there.
Pic 3: Looks like your subjects are the two birds in the foreground, but, again, they are dark and lack detail. Also, I'd crop all, or almost all of the constructions on the shore along with the bridges. Very busy and detracts from the bird scene.