OVENBIRD - [BCN]

Ovenbird
S. Maslowski / USFWS

Conservation Concern: 7PIF

Population Trend: Substantial Decrease
Credibility: Mod. Good

The Ovenbird is an uncommon breeder in the CW Region. Preferred habitat includes large woodlands with dense understory. Sample size is not large, but short term trends show a very substantial estimated decrease of between 15% and 45% annually. The Ovenbird has been shown to be one of the (desirable) species most negatively impacted by current restoration practices in the CW Region - especially buckthorn and honeysuckle removal (although it is not believed to be a productive breeder in our region's fragmented forests).

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%

-1%

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 57

Sample Size (Records): 47

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-45 to -15

GOODNESS OF FIT:
Chi-square: 35.28, df 50, p 0.9429
Likelihood Ratio: 35.77, df 50, p 0.9355
AIC: -64.23
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