BLACK-AND-WHITE WARBLER

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Black-and-white Warbler
Copyright © 2005 Jerry Kumery

 Conservation Concern: NONE

Population Trend: Poorly Known
Credibility: Very Poor

The Black-and-white Warbler is a very rare breeder in the CW Region, only recorded about once a year by the BCN Census.  Many of these records may represent late migrants.

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*:		  
  ----   ----  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 1

Sample Size (Records): 1

 

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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