© Tommy Holden

Greenfinch - Carduelis chloris
Reporting rates for Britain and Ireland



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

Greenfinch: The reporting rate for Greenfinch was remarkably stable up until 2006. Since then the emergence of a disease called trichomonosis has reduced the population by about a fifth.

Reporting rate by species per week

Plot of wrate by newdate

Average Monthly Reporting Rates

Plot of mean_rep_rate by fudgedate



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