But recognizing air pressure helps migrants because birds often migrate along frontal systems, and changing air pressure is one of the first signs that a front is coming. Unlike birds, we humans can watch or read weather reports on TV, the Internet, or newspapers when we want to travel or make plans. Interestingly, the Doppler radar used to forecast weather can also give ornithologists, and us, information about bird migration. A Doppler radar facility shoots microwaves into the atmosphere. Meteorologists use this information to look at weather systems and see how fast they are traveling.
Ornithologists use the information to track bird migration.
Last year was April 7, this year April 6. The sender was ninth-grader Andrew Sims. Hey, My name is Andrew Sims. I am 15 years old and this is my third year feeding hummingbirds. I currently have 10 hummingbird feeders plus a fake flower feeder that you fill with sugar water and stick in the ground, and a hummingbird wand to hand-feed the hummers.