案例简介：@ joelsartore的视频 | 一旦红脖子小鸡孵化出来，它就会搭上妈妈或爸爸的后背离开巢穴-这种运输方式将继续使用，直到它足够大可以自己游泳为止。在最初的六到七周，父母会给他们喂食昆虫幼虫和其他小猎物。他们还会给幼鸟喂食羽毛。这背后的原因尚不清楚，但一些研究人员认为，羽毛有助于保护下消化道免受坚硬，不易消化的物质，如骨头。要查看照片中的更多物种，请跟随我，@ joelsartore。# 照片方舟

案例简介：Video by @joelsartore | Once a red-necked grebe chick hatches, it leaves the nest by hitching a ride on either mom or dad’s back—a mode of transport it'll continue to utilize until it is old enough to swim on its own. For the first six to seven weeks, parents will feed them insect larvae and other small prey. They will also feed feathers to the young birds. The reasoning behind this isn’t well understood, but some researchers believe the feathers help to protect the lower digestive tract from hard, indigestible material like bone. To see more species featured in the Photo Ark follow me, @joelsartore. #PhotoArk

国家地理 - Video by @joelsartore | Once a red-necked grebe chick hatches, it leaves the nest by hitching a ride on either mom or dad

案例简介：@ joelsartore的视频 | 一旦红脖子小鸡孵化出来，它就会搭上妈妈或爸爸的后背离开巢穴-这种运输方式将继续使用，直到它足够大可以自己游泳为止。在最初的六到七周，父母会给他们喂食昆虫幼虫和其他小猎物。他们还会给幼鸟喂食羽毛。这背后的原因尚不清楚，但一些研究人员认为，羽毛有助于保护下消化道免受坚硬，不易消化的物质，如骨头。要查看照片中的更多物种，请跟随我，@ joelsartore。# 照片方舟

国家地理 - Video by @joelsartore | Once a red-necked grebe chick hatches, it leaves the nest by hitching a ride on either mom or dad

案例简介：Video by @joelsartore | Once a red-necked grebe chick hatches, it leaves the nest by hitching a ride on either mom or dad’s back—a mode of transport it'll continue to utilize until it is old enough to swim on its own. For the first six to seven weeks, parents will feed them insect larvae and other small prey. They will also feed feathers to the young birds. The reasoning behind this isn’t well understood, but some researchers believe the feathers help to protect the lower digestive tract from hard, indigestible material like bone. To see more species featured in the Photo Ark follow me, @joelsartore. #PhotoArk

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国家地理 - Video by @joelsartore | Once a red-necked grebe chick hatches, it leaves the nest by hitching a ride on either mom or dad

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