I do a lot of kayaking and birding. Barr lake is my favorite place to go for birding. Last weekend we watched some forsters tern fly around us, a sandhill crane flew over and I've seen black terns from the lake as well. A nice little list of shorebirds as well. They're having a pretty significant algae bloom rn so kayaking is there is sorta surreal. It's like floating on grass.
My other favorite places are lake dillon in Frisco and aurora reservoir.
Barr lake and Aurora res dont allow sports boating so no motor boats or jet skis. Small fishing boats with motors are allowed but no wakes.
Also worth checking out
Horse tooth Res in fort collins
Boyd Lake State park in loveland
Gross Reservoir in Boulder
I've been wanting to take a trip out east to some of our prairie reservoirs (john martin etc.) but havent had a chance yet!
Happy birding,
Megan M