Status, trends, and implications for the conservation of heron and egret nesting colonies in the San Francisco Bay area.

Author(s)

Kelly, J.P., Etienne, K., Strong, C., McCaustland, M. and Parkes, M.L

Volume

Issue

Start Page Number

455

Final Page

478

Datapoints

Displaying 1 - 6 of 6 datapoints.

Species: Snowy Egret (Egretta thula)
Exposure Endpoint Type	Endpoint Description	Endpoint Value	Sample Size	Units	Condition	Life Cycle Stage	Specific Location	Countries	Type
Population Density	Number of active nests	See citation Figure 2	See citation		Breeding	Adult	San Francisco bay area	USA	Exposure Factor Datasets
Survival/ Mortality	Mean annual nest survivorship	See citation Figure 6	See citation		Breeding		San Francisco bay area	USA	Exposure Factor Datasets
Clutch or Litter Size	Young in successful nests	See citation Figure 7	See citation			Nestling	San Francisco bay area	USA	Exposure Factor Datasets
Clutch or Litter Size	Mean young fledged in successful nests	Central San Francisco Bay: 2.18, Outer Coast-a: 1.82, Outer coast-b: 1.75, San Pablo Bay-a: 2.49, San Pablo Bay-b: 2.46, Russian River-a: 2.37, Russian River-b: 2.38	Central San Francisco Bay: 35, Outer Coast-a: 38, Outer coast-b: 15, San Pablo Bay-a: 160, San Pablo Bay-b: 103, Russian River-a: 97, Russian River-b: 53	Fledglings		Fledgling	San Francisco bay area	USA	Exposure Factor Datasets
Clutch or Litter Size	Mean young produced in successful nests	Central San Francisco Bay: 2.03, Outer Coast-a: 1.27, Outer coast-b: 1.60, San Pablo Bay-a: 2.09, San Pablo Bay-b: 1.54, Russian River-a: 1.66, Russian River-b: 1.75	Central San Francisco Bay: 35, Outer Coast-a: 38, Outer coast-b: 15, San Pablo Bay-a: 160, San Pablo Bay-b: 103, Russian River-a: 97, Russian River-b: 53	Young		Nestling	San Francisco bay area	USA	Exposure Factor Datasets
Time of Nesting	Intraseasonal nesting activity indexed by mean % nests	See citation Figure 10			Breeding		San Francisco bay area	USA	Exposure Factor Datasets

Comment

Please let us know if the information on this page is helpful for you. Enter your comment and leave your email address if you would like to receive a response. Thank you!

OEHHA is subject to the California Public Records Act and other laws that require the release of certain information upon request. If you provide comments, please be aware that your name, address and e-mail may be available to third parties. In addition, all public comments will be posted on our web site upon the close of the comment period.