RED-EYED VIREO

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Red-eyed Vireo
Copyright © 2005 Eric Secker

 Conservation Concern: NONE

Population Trend: Substantial Increase
Credibility: Very Good

The Red-eyed Vireo is a common statewide breeder.  Breeding habitat includes a variety of woodlands, often with tall open canopies.  Short-term BCN trends show a significant yearly increase.  This species is easily detected by song and is fairly well sampled by the BCN Census.

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*:		  
  9%   2%  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 424

Sample Size (Records): 350

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-2 to 20

  GOODNESS OF FIT:
Chi-square: 243.92, df 278, p 0.9306
Likelihood Ratio: 255.67, df 278, p 0.8277
AIC: -300.33
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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