Trend in the brood size of Kestrel pairs in the Ayrshire study area

trend_bs_gr_1988_2015

The graph above shows the trend in the brood size of Kestrel pairs that were confirmed to have hatched at least one chick in 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