However, we found an interesting trend, showing that the coefficient of clutch variation increased in time, indicating that clutches have become more variable in size in recent years.
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The effect of climate change on laying dates, clutch size and productivity of Eurasian Coots Fulica atra.
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The sentences
We also calculated Kendall correlation coefficients between the breeding parameters with a significant trend over time and meteorological data.
We found a negative trend in the production of young per successful nest though clutch size did not change significantly across years.