SCARLET TANAGER

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Scarlet Tanager
Steve Maslowski / USFWS

 Conservation Concern: 8

Population Trend: Poorly Known
Credibility: Moderate

The Scarlet Tanager is an uncommon breeder in the CW Region.  Preferred habitat includes woodlands with mixed understory.  Accurate trends cannot be calculated, but this species appears to be increasingly slightly in the CW Region.  This species is fairly well monitored 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*:		  
  19%   2%  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 84

Sample Size (Records): 67

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-40 to 78

  GOODNESS OF FIT:
Chi-square: 34.30, df 33, p 0.405
Likelihood Ratio: 31.24, df 33, p 0.5548
AIC: -34.76
NOTE: (model fits if p values are above 0.05)

Download Table of All Observations

 
 

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