© Tommy Holden

Tree Sparrow - Passer montanus
Reporting rates for Britain and Ireland



The graph below shows the reporting rate for Tree Sparrow by region. The reporting rate is a measure of the proportion of gardens which observed Tree Sparrow during a particular week.

Tree Sparrow: The seasonal cycle is similar to House Sparrow, although the reporting rate is much lower and there is no evidence of a decline in garden reporting rate.

Reporting rate by species per week

Plot of wrate * newdate

Average Monthly Reporting Rates

Plot of mean_rep_rate * fudgedate



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