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.
Horses are polyphasic sleepers, which means they have multiple, discrete sleep episodes in a 24-hour period. Time budgets show that horses spend one to three hours (adding up all sleep episodes) in a 24 hour period lying down, in both sternal (upright) and lateral (flat on side) recumbency. Differences are seen according to feeding and turnout management (horses tend to lie down less in constant turnout).