Search for: [Abstract = "In the first three years the number of boxes occupied increased by 20% per year \(maximum 62.9%\), then dropped in the following two years to 17.1%. The number of eggs ranged from 2\-6 with the average 4.8. The average egg length was 34.4 mm, width 24.7 mm and volume 10.6 cm3. Nesting success in individual years ranged from 16.7% in 2009 to 60.0% in 2006. The average number of fledglings was 0.8 individuals, while for successful nests it was 2.3."]

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