A complete 4K camera and 3-axis gimbal system come integrated with the Phantom 3 Professional edition quadcopter from DJI.
Standing vs. Lying Down. It's a common misconception that cows don't lie down to rest and that they sleep standing up, just like horses do much of the time. In fact, cows actually lie down for up to 14 hours per day, standing up every few hours, stretching and then lying back down again.
A typical night as a horse will involve grazing, dozing standing up, and short periods of lying flat out to get some serious sleep. Although horses on average require roughly two to three hours of REM sleep a night, this deep sleep typically occurs in bursts of ten to twenty minutes at a time.