PROTHONOTARY WARBLER

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Prothonotary Warbler
Copyright © 2005 Eric Secker

 Conservation Concern: 5PIF, WL-Y, FW

Population Trend: Poorly Known
Credibility: Very Poor

The Prothonotary Warbler is a rare breeder in the CW Region, common in the southern portions of the states.  The CW Region appears to have always been on the northern fringe of this species range.  This rarely encountered species is poorly sampled by the BCN Census and accurate trends cannot be estimated.

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*:		  
  17%   2%  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 4

Sample Size (Records): 3

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-71 to 104

  GOODNESS OF FIT:
Chi-square: 10.23, df 7, p 0.176
Likelihood Ratio: 9.39, df 7, p 0.2257
AIC: -4.61
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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