Because Bigfoot doesn’t usually walk around the middle of town during daylight hours when it would be easy for many people to snap photos of him/her.

First off, let’s think about this logically.

• How long does it take you to grab your smart phone, unlock it, hit the button for the camera, aim and shoot? 5 Seconds? Ten?
• In a high percentage of reported encounters, the witnesses exclaim that the creature moves incredibly fast and fluidly, even through difficult terrain.
• What’s another common thread in reported sightings? They are unexpected, happening when the car’s headlights shine on something big in the road rounding a turn, or when someone sees the creature as it begins to run away.

So you’ve got an unexpected encounter with a creature that moves incredibly fast, and it takes you at least 5–10 seconds to get your phone’s camera ready for a picture. This is probably why what few photos we do get are blurry.

Additionally, think about these items:

• Now, how often are you out in the woods? I mean really way out in the boonies. Places where few people ever go to. Most people may never get there, or may only go for a few days or a week maximum each year.
• Then when they do, they camp in the nice easy RV loops or at the campsites with showers, fire rings, etc. I’ve yet to see a bigfoot hit the shower house for a quick rinse off.
• And when they do go out for a hike, it’s during the day, so they can see the terrain and feel safer about the bears, cougars, rattlesnakes, etc. You almost never see anyone hiking at sunset, night time, or sunrise.

So in addition to the improbability of actually catching a bigfoot on your phone’s camera, you’ve made it even harder by limiting yourself to specific parks during the day time. Likely during the nice weather too. Who’s going to go hiking when it’s 33 degrees and freezing rain? Most researchers believe bigfoot is either nocturnal or crepuscular, so daytime is not the best time to look for him.

One final section on this too:

• Bigfoot is a wild animal, said to be intelligent and extremely stealthy. You are venturing into his back yard. He knows the land, the trails, the bogs, and the creeks. He is also 7–10 feet tall and 300–800 lbs by all accounts. He can sound like this:
• Bigfoot Howls Screams Sequoia National Park (best sound between 0:40 - 1:30 on the video)
• Do you really think anyone is going to have their cell phone out & ready when they hear that coming towards them? (I’d be headed for the car!)

Now it this proof of their existence? No. But it is a logical line of thought on why we don’t get very many cell phone photos or videos of the big guy. Penso che la migliore prova che otterremo sarà il video, dalle trail cam, dalle telecamere di sicurezza sui bordi degli edifici della città e dai droni.