BLUE-WINGED WARBLER

Blue-winged Warbler
Copyright © 2005 Jerry Kumery

Conservation Concern: 5PIF, WL-Y, FW

Population Trend: Poorly Known
Credibility: Mod. Poor

The Blue-winged Warbler is an uncommon breeder in the CW Region. Prefered habitats include dense shrublands with canopy and forest edges. Although this species is on many regional watch lists, it appears to be on the increase in NE Illinios and NW Indiana. However, this species has been extending its range northward into our area, so trends here may not accurately reflect the trends in most other regions. Data on this species is still sparse, and some June records may represent late migrants.

Trend Level

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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*:

30%

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 30

Sample Size (Records): 28

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-9 to 69

GOODNESS OF FIT:
Chi-square: 28.79, df 38, p 0.8594
Likelihood Ratio: 28.42, df 38, p 0.8707
AIC: -47.58
NOTE: (model fits if p values are above 0.05)

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