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.
An adult female that has had a calf (or two, depending on regional usage) is a cow. A Brahman calf. A cowâs udder contains 2 pairs of mammary glands. The average sleep time of a domestic cow is said to be only 4 hours a day. Cattle today are the basis of a multi-billion dollar industry worldwide. The international trade in beef for 2000 was over $30 billion and represented only 23 percent of world beef production. (Clay 2004).