GLIMPSES OF MIGRATION #4 — CAN YOU SPOT THE TWO DEER WITH GPS COLLARS? Have you ever seen a deer that seems materialize out of thin air, like the one in the background at :11 seconds? This shows how easy it is for deer to hide in a small ravine or behind a sagebrush. Luckily, today’s biologists have excellent gear to keep track of these wily animals. Case in point is the GPS collar on Deer #17, which you can see at 1:20. This small tracking device — and satellite networks orbiting around the Ear