Osprey Project

Archived Project - Now a project of the Teton Raptor Center

2011 Marks the Inaugural Year

Mark Gocke Photograph

2011 marked the inaugural year of Nature Mapping Jackson Hole Volunteers collecting occupancy and productivity data on Osprey nests outside of Grand Teton National Park. Osprey are not monitored by the Wyoming Game and Fish Department. Therefore, Nature Mapping Jackson Hole’s Osprey Project is designed to fill a data need in Teton County. Our monitoring will provide baseline data for Osprey nests and allow for the tracking of this species success over time.

Osprey first arrive in the Jackson area in April and depart for points south in September/October. Osprey tend to build their nests in observable locations along road and waterways, therefore this species lends itself well to monitoring by citizen scientists. Trained volunteers observed potential nest sites over the nesting season to record if osprey occupied sites, if they incubated eggs, and the number of young that were produced.

Thank you to all who are involved in this important project!

2011 Summary:

  • 42 Nests Checked by 18 Volunteers
  • 14 Nests were successful, 9 were unsuccessful and 1 was unknown
  • 21 Young were produced
  • Winter 2010-2011 was a high snow year (700+ inches total snowfall)
  • Timing of Osprey nesting varied greatly from north to south

Osprey Nest Success and Productivity


Number of Nests Checked Quantity Percent
Total 42 100%
Occupied 24 57%
Unoccupied 10 24%
Goose 7 17%
Owl 1 2%


Success of Occupied Nests Quantity Percent
Successful 14 58%
Unsuccessful 9 38%
Unknown 1 4%


Productivity Quantity
Total Young Produced 21
Avg Young Produced per Successful Nests 1.5
Avg Young Produced per All Occupied Nests 0.88



Below are printable (pdf) versions of the annual Osprey Project Reports

2011 Report