Address:
Arizona-Sonora Desert Museum, 2021 North Kinney Road, Tucson, Arizona 85743 U.S.A.

Comments:
In order to study long-distance migratory animals along their travel corridors, a regional, international, multi-scaled approach is required. For some species, this could mean a study corridor of hundreds or even thousands of kilometers. Studies of long-distance migrators are further complicated by the fact that animals tend to vary their route from year to year due to interannual variations in climate and/or floral resources. Our study addressed four pollinator species, each with its own distinct migratory routes of variable length and geography, and unique natural history. In addition, the migratory corridors that we studied cross political borders. Political boundaries pertinent to the corridor region of this study are shown on various maps