首页> 外文期刊>The Wilson Bulletin >COURTSHIP DISPLAYS AND NATURAL HISTORY OF SCINTILLANT (SELASPHORUS SCINTILLA) AND VOLCANO (S. FLAMMULA) HUMMINGBIRDS
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COURTSHIP DISPLAYS AND NATURAL HISTORY OF SCINTILLANT (SELASPHORUS SCINTILLA) AND VOLCANO (S. FLAMMULA) HUMMINGBIRDS

机译:蜂鸟(Selasphorus scintilla)和火山(s.flammula)的展翅展览和自然历史

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The natural histories of Volcano (Selasphorus flammula) and Scintillant (S. scintilla) hummingbirds are poorly known. We describe aspects of their breeding behavior with emphasis on courtship displays and sounds that males produced for females. Males of neither species sang undirected song. Males of both species produced a display dive, in which they ascended ~25 m in the air and then dove, swooping over the female. Both species produced a pulsed sound that was synchronized with abrupt tail spreads during the bottom of the dive. The second rectrix (R2) of both species was capable of generating the same sound in a wind tunnel, suggesting these sounds were made by the tail. The dive sounds of the Volcano Hummingbird were louder than those of the Scintillant Hummingbird. Male Scintillant Hummingbirds produced a wing trill in flight, and performed a shuttle display to females in which the wing-beat frequency reached ~100 Hz. Males held territories in open areas during the breeding season. Not all territories included abundant floral resources, and abundant resources in closed habitat were not defended. The role of resources is unclear in the breeding system of these two species.
机译:火山(Selasphorus flammula)和闪烁体(S. scintilla)蜂鸟的自然历史知之甚少。我们以雄性为雌性而产生的求爱表现和声音来描述它们的繁殖行为。两种物种的雄性都唱无方向的歌。两种物种的雄性都进行了一次跳水表演,在空中升起了〜25 m,然后飞了下来,俯冲了雌性。在潜水的底部,这两个物种均产生了与突然的尾巴扩散同步的脉冲声音。这两个物种的第二个回线(R2)都能在风洞中产生相同的声音,表明这些声音是由尾巴发出的。火山蜂鸟的潜水声音比闪烁蜂鸟大。雄性闪烁蜂鸟在飞行中产生了翅膀的颤音,并向雌性进行了梭子展示,其中雌性的拍打频率达到了约100 Hz。在繁殖季节,雄性在开阔地带占领领土。并非所有领土都包括丰富的花卉资源,并且没有保护封闭栖息地中的丰富资源。在这两个物种的繁殖系统中,资源的作用尚不清楚。

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  • 来源
    《The Wilson Bulletin》 |2011年第2期|p.218-228|共11页
  • 作者单位

    Peabody Museum of Natural History, Department of Ecology and Evolutionary Biology, Yale University, P. O. Box 208106, New Haven, CT 06511, USA;

    Peabody Museum of Natural History, Department of Ecology and Evolutionary Biology, Yale University, P. O. Box 208106, New Haven, CT 06511, USA;

    Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria Rodrigo Facio, 2060 San Jose, Costa Rica;

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