Sounds like you have quite the business going. I only have a few ducks; two ducks, two drakes right now. As soon as all the four remaining ducklings grow to butcher size the males along with the adult drakes will go to processing. The drakes are aggressive toward the chickens (grabbing neck, mating behavior) so they gotta go! I do sell eggs and at least two of the four ducklings are female so I'll keep only females next year.
I think the mature blue spruce is about the best cover as the boughs go all the way to the ground on the outside, and underneath is a weather-proof, hawk-proof shelter. I'm sure there are other bushes and trees that would provide good cover, but that's what is on my property and they've been great for the birds. Now that it's very hot, I have the mister hoses running under those trees and it's 20 degrees cooler under there.
Hope your surgery goes well, and good luck with your business. Sounds ducky! :-)
Edited by beccaWA - 6/6/16 at 5:51pm