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为什么火烈鸟是粉红色的?简单解释 - Practical Tips

为什么火烈鸟是粉红色的?简单解释

by Mike

火烈鸟呈粉红色的原因很简单。它们醒目的颜色与鸟儿吃的食物有关。

火烈鸟:为什么它们是粉红色的。

火烈鸟以其美丽的粉红色羽毛和特殊的喙而闻名。所有种类的火烈鸟看起来都非常相似。除了颜色,火烈鸟的其他特征还有长腿和长脖子。火烈鸟的身高可达 1.50 米。火烈鸟遍布美洲、非洲和西南亚。所谓的粉红火烈鸟甚至可以在欧洲部分地区找到,不过其羽毛颜色更偏向粉白色。

  • 火烈鸟并非生来就有粉红色羽毛。幼鸟的羽毛仍然是白色的,在头四周内会变成灰色的绒羽
  • 火烈鸟只有在数年后才会获得成年羽毛。它的腿也是在几年后才变成粉红色,通常是在大约三年后。
  • 粉红色是因为火烈鸟吃的食物。它们最喜欢的食物包括螃蟹和藻类。尤其是盐水虾,可以在泻湖和咸水中找到,有助于火烈鸟长出五颜六色的绒毛。
  • 这些特殊的虾以单细胞粉红色藻类为食。这种藻类含有类胡萝卜素,胡萝卜中也含有这种物质。如果火烈鸟吃了螃蟹,它们也会吸收光合色素
  • 根据营养成分的不同,火烈鸟的颜色也会从粉白色到深粉色不等。例如,在玻利维亚的科罗拉达湖(Laguna Colorada)上生活着一些火烈鸟,它们的绒毛几乎是红色的。
  • 火烈鸟羽毛着色的影响也可以在人类身上观察到。例如,如果我们吃了大量胡萝卜或其他含有类胡萝卜素的食物,皮肤就会变成轻微的橙色。
  • 粉红色对繁殖尤为重要。雌火烈鸟喜欢羽色鲜艳的配偶。
  • 由于自然着色只发生在野外,结果是圈养的动物不再愿意繁殖。因此,动物园在食物中混入了着色剂。
  • 此外,火烈鸟还会再次掉色。生活在恶劣环境和圈养环境中的火烈鸟会呈现灰色。

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