- 期刊
棕扇尾鶯與褐頭鷦鶯在農田中繁殖生態之比較
Comparison of Breeding Ecology of Zitting Cisticola (Cisticola juncidis) and Tawny-Flanked Prinia (Prinia subflava) in the Rice Paddy
摘要
Zitting Cisticola (Cisticola juncidis) and Tawny-flanked Prinia (Prinia subflava) are birds belonging to the family Sylviidae. They are commonly found in lowlands and costal plains of Taiwan, and share rice paddies as breeding habitat and have fairly similar breeding season. In order to understand their breeding ecology and effects of agricultural activities, this study was conducted in the Kaohsiung area of the southern Taiwan in February 2004 to May 2005. A total of 47 nests of Zitting Cisticola and 31 nests of Tawny-flanked Prinia were observed. The breeding season of the two species were from March to November but with the peak months in March and April for the former and in April for the latter. As compared to the Tawny-flanked Prinia, the Zitting Cisticola had significantly lower nesting sites on rice stalks (Zitting Cisticola via Tawny-flanked Prinia: 49.1±8.9cm via 64.6±7.4cm), shorter distances from banks of paddy fields (124.3±86.6cm via 353.4±176.3cm), and smaller nests (6.4±0.7cm via 7.9±0.4cm in diameters) with narrower nest mounths (4.1±1.2cm via 4.5±0.9cm in diameters). No significant difference were found for egg sizes, clutch sizes, incubation periods, hatching rates, nestling and fledgling sizes, and their growth rates and nesting periods. However, breeding success of the Zitting Cisticola was significantly higher than that of the Tawny-flanked Prinia (62.1%＞42.3%). This difference might be due to different breeding sequence of the two species in relation to the rice harvest activies and high rainfalls in the month of May.
並列摘要
Zitting Cisticola (Cisticola juncidis) and Tawny-flanked Prinia (Prinia subflava) are birds belonging to the family Sylviidae. They are commonly found in lowlands and costal plains of Taiwan, and share rice paddies as breeding habitat and have fairly similar breeding season. In order to understand their breeding ecology and effects of agricultural activities, this study was conducted in the Kaohsiung area of the southern Taiwan in February 2004 to May 2005. A total of 47 nests of Zitting Cisticola and 31 nests of Tawny-flanked Prinia were observed. The breeding season of the two species were from March to November but with the peak months in March and April for the former and in April for the latter. As compared to the Tawny-flanked Prinia, the Zitting Cisticola had significantly lower nesting sites on rice stalks (Zitting Cisticola via Tawny-flanked Prinia: 49.1±8.9cm via 64.6±7.4cm), shorter distances from banks of paddy fields (124.3±86.6cm via 353.4±176.3cm), and smaller nests (6.4±0.7cm via 7.9±0.4cm in diameters) with narrower nest mounths (4.1±1.2cm via 4.5±0.9cm in diameters). No significant difference were found for egg sizes, clutch sizes, incubation periods, hatching rates, nestling and fledgling sizes, and their growth rates and nesting periods. However, breeding success of the Zitting Cisticola was significantly higher than that of the Tawny-flanked Prinia (62.1%＞42.3%). This difference might be due to different breeding sequence of the two species in relation to the rice harvest activies and high rainfalls in the month of May.