A Guide to Enhancing Rivers, Streams and Desert Washes for Birds and Other Wildlife.

Produced by Tucson Audubon Society, Audubon Arizona, and Arizona Game and Fish.

The U.S. Fish and Wildlife Service (Service), determined threatened status under the Endangered Species Act of 1973 (Act), as amended, for the western distinct population segment (DPS) of the yellow-billed cuckoo (Coccyzus americanus), a species located from the western portions of the United States, Canada, and Mexico. This final rule implements the Federal protections provided by the Act for this DPS. 
The MIGCLIM R dispersal model is calibrated and used to project the timing of arrival of subtropical tamarisk beetles into flycatcher habitats over the next 10 years, and to derive least dispersal time cost paths into these habitats.