from what i've gleaned here, i would speculate that yer proposed BG, YP, and SMB will not effectively control the BG population growth over time. you might consider HBG, but of coarse this brings its own mgmt worries if their offspring cant be controlled by the YP and SMB.
I wonder if HSB would be a potential predator choice for brettski and goals of good eating and limited mgmt?
I would think SMB could pose the same duckling dinner threat but for a shorter period of time as their mouths arent as big and the ducklings grow pretty fast....and your large shallow wetland area will help that issue alot.
edited post....i also dont recall if you added any rocky habitat?.....critical for good SMB spawning
