Empidonax traillii extimus: An endangered subspecies

Author(s)
Unitt, Philip
Year
Article Title
Empidonax traillii extimus: An endangered subspecies
Volume
18
Pages
137-162
Start Page Number
137
Final Page
162
Review

Datapoints

Displaying 1 - 2 of 2 datapoints.
Species: Northwestern willow flycatcher (Empidonax traillii ssp. brewsteri)
Exposure Endpoint Type Endpoint Description Endpoint Value Sample Size Life Cycle Stage Type
Time of Migration or Dispersal date of earliest arrival of spring migrants May 15 Not Reported Not Reported Exposure Factor Datasets
Species: Southwestern Willow Flycatcher (Empidonax traillii ssp. extimus)
Exposure Endpoint Type Endpoint Description Endpoint Value Sample Size Life Cycle Stage Specific Location Type
Time of Nesting estimated beginning of nesting based on historic egg collections June 1 187 dated egg sets Adult coastal southern CA; Colorado River; upper San Pedro River, AZ Exposure Factor Datasets

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