© Tommy Holden

Yellowhammer - Emberiza citrinella
Reporting rates for Britain and Ireland



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

Yellowhammer: Even at this low and declining reporting rate there is a clear seasonal cycle, suggesting that late winter is a time of food shortage for this species.

Reporting rate by species per week

Plot of wrate * newdate

Average Monthly Reporting Rates

Plot of mean_rep_rate * fudgedate



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