Migratory patterns are intrinsic behaviors that are controlled by photoperiods, gonad cycles and hormones as well as proximate factor such as weather and food availability trigger day-to-day actions while migrating. These behaviors are typically recurrent, however, they also require correct conditions or access to resources to remain viable. Given the extraordinarily long distances that some species travel; monitoring their movement and accumulating data on this has been challenging. Modern technological advances in doppler radar technology has allowed for more detailed tracking of large migratory patterns of several species. With information regarding their altitude, speed and direction, experts can made educated assumptions or even confidently identify which species they are monitoring.