© Tommy Holden

Coal Tit - Parus ater
Reporting rates for Britain and Ireland



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

Coal Tit: The reporting rate for this species usually peaks in December. The peak varies in size from year to year, a consequence of the size of the beech mast crop.

Reporting rate by species per week

Plot of wrate * newdate

Average Monthly Reporting Rates

Plot of mean_rep_rate * fudgedate



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