I hadn't even thought about the nests - what a great idea! But I also know what you mean about being reluctant in destroying eggs. Many years ago after the Northridge quake, I had to have extensive work done on my home. Unfortunately, the swallows had already started nesting for the year and the painting contractor was none to happy by having to wait until they had raised their babes and flown off before finishing the job. I did have the nests removed after they (the birds) were gone and they never did return afterwards.
I have had my own struggles using netting (I have wall-to-wall ground squirrels in the spring) so I understand how laborious that becomes. Please let me know how the sugar water works out next year - I really am fascinated by that concept.
