Pigeons now use cell phones...

Well, Joe..since the pidgeons have no on-board eletronics for the cell phones to interfere with,. probably not a problem. And I'm sure they use headsets...lack of fingers to dial you know. Probably have them custom set at the store to dial their numbers for them. All they have to do is squack their commands into the little headsets.
Of course, we all await the first air crash involving pidgeons too busy talking to watch where they were flying.

This remined me of this old old OLD cartoon where some Hanna Barbera characters had to fly catching a mail-pidgeon... or so.

Remember that little old tune???