Reproductive performance of the Middle Spotted Woodpecker Dendrocoptes medius around Yasouj city (South Western Iran)

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In the spring of 2018, 18 nests of the Middle Spotted Woodpecker (Dendrocoptes medius) were surveyed in a 300 hectare area of the forest region in the south and north of Yasouj. Egg-laying began in late March. Clutch sizes were between three and seven (mean: 4.29 ± 1.25, median: 4, N = 8). The incubation period varied from 11 to 13 days (mean: 12.4 ± 0.89 days). The number of eggs that hatched in successful nests (N = 8) ranged from 2 to 5 (mean: 3.75 ± 0.89). Hatching percentage (N = 7) was 90%. Duration of the nestling period was 23–25 days (median: 24 days). Fledging dates ranged from Apr 28 to June 10, and most chicks (77%) fledged in the first ten days of May. Number of fledglings from successful nests (N = 17) ranged from 1 to 5 (mean: 3.58 ± 0.71), whereas the mean number of fledglings from all nests (N = 18) was 3.39 ± 1.09. The percentage of successful nests (at least one fledged young, N = 17) was 94.4%. The overall duration of breeding varied from 39 to 43 days (mean: 40.8 ± 1.48 days).

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