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Exploration of Factors that may lead to colony abandonment or reduced productivity of American White Pelicans (SWG T-7-R)

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Description

 

The catastrophic abandonment of the Chase Lake colony raised concerns about the stability of colonies in the northern Great Plains and underscored the limits of our understanding of population dynamics and ecology in this colonial breeding bird. To address these shortcomings, we began a multi-faceted effort to gather ecological information about the colonies in South Dakota, North Dakota, and Montana. Our goal is to advance our understanding of white pelican ecology and provide sound science on which to base future management decisions.

Objectives

  1. Document nesting phenology and nesting behaviors,
  2. Determine nest-attendance schedules and quantify chick feeding rates,
  3. Estimate distances to foraging sites and determine attributes of those sites,
  4. Document timing and extent of egg and chick losses,
  5. Record evidence of colony disturbances, disease outbreaks, and severe weather events,
  6. Obtain fresh carcasses for necropsy if and when significant losses of chicks or adults occur, 7) Apply USGS bands on a sample of chicks.

 


Metadata

Authors and Contributors
Paulette Scherr USFWS; Marsha Sovada and Pam Pietz, NPWRC
Type
Research papers
Research Category
Wildlife
Target Species
American White Pelicans
Approximate Completion Date
Formats
PDF
Tags
SWG pelicans colony nest abandonment