There can be many reasons a pigeon gets lost in a race. Weather,,,,,,, Microwave emitting towers, are considered suspect in pigeon navigation. Raptor pursuits will often steer pigeon off course. Bird gets tired out in race due to many factors. Large bodies of water often steer pigeon in wrong direction. Pigeons will not cross large bodies of water. to correct their flight path. I have read posts where pigeon ends up (is found) somewhere in Wisconsin,,,,, but home is somewhere in mainland Michigan. The race started somewhere south of there.
Many GENUINE RACERS still want their lost birds,,,,,, for future breeding purposes,,, even though they got lost.