Dr. Charles van Riper III

USGS Research Scientist and Professor 
USGS Southwest Biological Science Center Sonoran Desert

125 Biological Sciences East ~ University of Arizona ~Tucson, AZ 85721-125
(520) 626-7027 ~ (520) 670-5100 fax

Read More About Dr. van Riper  ~ Visit his Research Lab & Students

   Yellow - billed Cuckoo

Data

During 1998, the USGD and AGFD surveyors covered 6603 hectares over 564.51 hours and detected 153 breeding pairs of Western Yellow-billed Cuckoos.   Therefore an average of 11.7 hectares were surveyed per hour of effort, during which 0.27 breeding pairs were detected per hour, with an average of one pair detected for each 43.2 hectares surveyed.

 

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