LEAST BITTERN

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Least Bittern
Copyright © 2005 Eric Secker

 Conservation Concern: 4 State Threatened

Population Trend: Poorly Known
Credibility: Very Poor

The Least Bittern is an uncommon breeder in the CW Region.  Nesting habitat is usually confined to marshes or lakes with dense cattails or other tall vegetation.  This species is also very elusive and is often only seen for brief periods of time when one flies up from the cattails and then quickly back down.  Data for this species is too sparse to accurately estimate trends.

Trend Level

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1997-2004 Trend
 Point Count Data		 1988-2004 Trend*
 All Observation Types

*Data gathered using a assortment of sampling methods  - for casual inferences only
  Avg. Yearly
Rate of Change:

The vertical axis numbers represent an index of the population change.

Note that the scales may vary between graphs.

 Avg. Yearly
Rate of Change*:		  
  ----   36%  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 4

Sample Size (Records): 3

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
0 to 0

  GOODNESS OF FIT:
------
------
------
NOTE: (model fits if p values are above 0.05)

Download Table of All Observations

 
 

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Copyright © 2005 Audubon - Chicago Region & Bird Conservation Network

 
 
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