Breeding Success of House Sparrow Passer domesticus at Kian Abad in Ahvaz

The House sparrow (Passer domesticus, Pallas 1811) is a widely distributed bird species found throughout the Iran. In the southern provinces of the country has nutritional value. That's why the success rate of breeding of the species was studied by direct observation from March to May 2016 in Kian Abad in Ahvaz in green spaces. Green spaces of Kian Abad covered by zizphus spinachrist, Eucalyptus camaldulensis, Albizia lebbeck and Cenocarpus sp. A total of 125 nests were counted on the trees which 50 nest on Eucalyptus camaldulensis, 40 nests on Albizia lebbeck and 35 nests on by zizphus spinachrist trees. Start Nest making: 18 March, the peak laying period 25 to 28 March, 15 to 25 April peak hatching time and the chicks fledged on 22 May after 54 days. View 125 nests and 500 eggs into nests dimensions were measured. Average clutch size per nest 4, the average large diameter of the eggs 2.20±0.12 cm, the average small diameter of eggs 1.61 ±0.12 cm, The average size of the eggs 2.86 ± 0.45 cubic meters, the average weight of the eggs 2.30 ± 0.34 gr, mean hatching period 14.19 ± 0.91 days, the average nest weight 145.46 ± 10.4grams, the average length of nests 19.23± 5.94 cm, width average of nest 12.53±2.25 cm, the average entrance of nests 8.76±2.25 cm and the average height of the nests from the ground 4.68 ± 1.2 m, were determined. Breeding success rate were 54 percent and mortality was 46 percent.