Not unless the bird is very close to the antennas at either end. This is a neat exercise in antenna design. They've built high gain directional antennas and m

Not unless the bird is very close to the antennas at either end. This is a neat exercise in antenna design. They've built high gain directional antennas and minimized transmission line losses. The 15 dBi antennas aren't even that remarkable; you can buy 30+ dBi wifi antennas. My first 'better than dial-up' internet connection was a 2.4 GHz wifi service across 7 miles. On my end was a roof mounted aluminum parabolic grid antenna. It worked rather well and sometimes I wish I still had it.