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Well if you had a craving for salty chips / crisps, which you know to be in your kitchen, why would you instead walk across town for them?I saw a documentary where they put GPS on ferral pigeons and they all stayed within a 4 block radias.
On the other hand, I am absolutely certain that the use of the term "all" there is misleading. "All" of the pigeons they were able to equip with GPS trackers perhaps, which may all have been younger / inexperienced birds.
Despite that they often appear to be interchangeable, and flocks routinely display common social behaviors (traveling together), pigeons are also remarkably individual. Watch any flock of feral pigeons for a few hours and you will see individual birds flying away from the flock. Follow them long enough and you will find them at a nest, or a beach, or in a fallow field, or a backyard garden. When they aren't leaving the area due to a complete lack of food, perhaps it is a craving for a certain nutrient or type of food that prompts some birds to travel farther.
Studies from various cities have shown travel distances for foraging pigeons between 0.3 to 25 kilometers (0.18 miles to 15 miles.) In some cases, entire flocks leave a town together to forage in fields but only during particular seasons (and those clearly know when a distant crop is ripe.) In other cases, a flock forages locally within a town, but varying individual birds travel outside the town despite some types of food being plentiful within the town. I believe that they experience cravings for specific foods or nutrients, and then travel to find them -- possibly guided by sense of smell, or prior knowledge of where such foods can be found.
I don't know whether those behaviors of ferals would necessarily pass to domesticated pigeons, but I wouldn't be surprised if they did if for no other reason than the domesticated birds following their feral friends.