Wyoming Ecological Services
Mountain-Prairie Region

Federally Listed, Proposed & Candidate Species | Species of Concern | Migratory Birds | All Species By County



Federally Listed, Proposed and Candidate Species


Yellow-billed Cuckoo
(Coccyzus americanus)

Status: Threatened

Yellow-billed CuckooPhoto Credit: FWS/Sweanor


Yellow-billed Cuckoo Area Of Influence

Section 7 Range Symbol

Wyoming Area Of Influence
Yellow-billed Cuckoo

Potential Distribution in Wyoming

For Species Lists, please use the IPaC System

Area Of Influence

Areas Of Influence (AOI) identify areas where any project located within should consider potential effects to the Threatened, Endangered, Proposed, and Candidate species and designated and proposed Critical Habitat, in reference to Section 7 of the Endangered Species Act of 1973, as amended.  AOI typically encompass larger areas than simply where the species is known to exist because of direct and indirect effects to the species and their habitat.  It is important to consider potential effects to the species and their habitat within these larger areas.  Action agencies are encouraged to refer to the Service’s Information, Planning, and Conservation System (IPAC) or contact the FWS Wyoming Ecological Services Office for additional information.  (AOI boundaries based on the best available data at time of development.  AOI will be updated as new information becomes available).

Download Area Of Influence GIS Data or Area Of Influence Google Earth layers


Species Information

The distinct population segment of the yellow-billed cuckoo (Coccyzus americanus) west of the Continental Divide is listed under the ESA as a threatened species (79 FR 59992; October 03, 2014).  In Wyoming, the yellow-billed cuckoo is dependent on large areas of woody, riparian vegetation that combine a dense shrubby understory for nesting and a cottonwood overstory for foraging.  Destruction, degradation, and fragmentation of wooded, riparian habitats are continuing threats to yellow-billed cuckoos in Wyoming.  Additionally, project actions to control outbreaks of caterpillars, cicadas, or grasshoppers and the general use of insecticides in or adjacent to riparian areas may negatively affect yellow-billed cuckoos.  Surveys to determine the presence of yellow-billed cuckoos are difficult due to the secretive nature of the species and the variability in the timing of nesting.  Therefore, we recommend that projects avoid impacting large, woody riparian areas from late May to September, during the period when yellow-billed cuckoos seasonally occur in Wyoming.  To help us better understand the distribution and status of the species in Wyoming, we request that all sightings of yellow-billed cuckoos west of the Continental Divide be reported to our office.

Last updated: April 10, 2015