FIELD SPARROW

Field Sparrow
Copyright © 2005 Eric Secker

Conservation Concern: 5PIF, FW

Population Trend: Stable?
Credibility: Moderate

The Field Sparrow is a common statewide breeder. Nesting habitat includes mixed grasslands, open to moderate shrublands, and weedy fields. Although this species is declining considerable in most areas, the populations in the CW Region - mostly on preserved lands - appear to be relatively stable. Decreases in the Midwest may be partially attributed to increased development and intensive farming. Parasitism by Brown-headed Cowbirds is also quite high.

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*:

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 695

Sample Size (Records): 383

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-7 to 7

GOODNESS OF FIT:
Chi-square: 462.38, df 413, p 0.0468
Likelihood Ratio: 485.61, df 413, p 0.0079
AIC: -340.39
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