Trend in clutch size of Kestrel in the Ayrshire study area

trend_cs_gr_1988_2015

The graph above shows the trend in the clutch size of Kestrel pairs that were confirmed to have laid at least one egg in the the Ayrshire study area between 1988 and 2015.

ParameterPeriodYearsMean annual sample sizeType of trendMean +SE
Breeding pairs1988-20152839.61 ± 1.04Decreasing25.5 (± 1.22)
Clutch size1988-20152817.57 ± 1.27Stable5.13 ± 0.04
Brood size1988-20152815.04 ± 1.05Stable
4.66 ± 0.05
Fledgling success1988-20152821.29 ± 1.21Linear increase0.86 ± 0.01
No. fledglings1988-20152817.89 ± 0.99Stable
4.12 ± 0.06