Pigeons everywhere help

Iam doing a asphalt reroof 91 units 4/12 and 8/12 there are piegeons every where making a mess on my new roof. We have close of all attic entry the promblem is they hang out undre the soffit where the roof dormer returns into the main roof. I dont want to use chicken wire for cosmetic reasons . any proven methods out there. Thanks in advance.>>>