I would pay money for such a delivery system, but it would only work with pidgeon hotels/stations in each city and the more specific local distribution by for e

I would pay money for such a delivery system, but it would only work with pidgeon hotels/stations in each city and the more specific local distribution by for example volunteer or paid cyclists who know where to go. It would be valuable carbonfree messaging supporting the local economies (and health of pidgeons)! You could also do solar powered fidonet-like raspberry pi asynchronous national network and print-outs (or handwriting) for last mile delivery but that would perhaps be more difficult and expensive to setup. Not sure if either would be a viable business plan.