【摘要】 20 0 3年 4～ 9月通过焦点动物取样法 (focalanimalsampling)和完全记录法 (all occurrencerecording)对红尾伯劳的营巢行为进行了研究。结果表明 :凌晨选巢 ,巢多位于 7～ 1 5m的高大乔木冠部分叉处。对1 9个巢址主成分分析表明 :前 6个主成分特征值均大于 1 ,累积贡献率达 83 74%,基本包含了 1 6个参数的总信息量。营巢活动自 5月下旬至 7月中旬 ,两性参与筑巢 ,营巢期间有求偶交配行为 ,营巢期 6～ 8d。衔材主由雄鸟担任 ,达 72 1 6%,衔材高峰出现于营巢第 2d和第 4d,每日高峰在 7～ 8时和 1 5～ 1 7时。理巢基本全由雄鸟承担。护巢性强更多还原

【Abstract】 The nest building behavior of Red tailed Shrike was studied with the methods of focal animal sampling and all occurrence recording in Nanchong, Sichuan from April to September 2003. The results showed that all studied nest sites were selected in the morning, predominantly built on crunches close to canopy of 7-15 meter high trees. It was shown that the first six principal components are greater than 1 and cumulative percentage reaches 83.74% and almost contain the total information of sixteen parameters by the principal component analysis of 19 nest′s sites. The nest building period lasted from late May to the middle of July. The nest was constructed by both sexes. Courtship and mating behaviors existed during the period of nest building. The nest building period was about 6-8 days, with most nesting materials (72.16%) being collected by the male. The peak of getting materials arrived at the second and the fourth day. Materials were almost arranged by the male. Nest defense behavior of the Red tailed Shrikes was strong.更多还原