I read lots of posts on PB with people complaining about herons and cormorants EATING their fish. I had no idea that birds were the main vector for parasites and diseases.
Obviously a little extra initial work in shaping the slopes on forage ponds will have a bigger pay off long term - for multiple reasons.
I have observed various species of herons take fish. Despite seeing lots of cormorants, I have never observed one taking a fish.
How do cormorants take fish? What needs to be added to an "anti-heron" pond design to also discourage the cormorants?
