外语原版纪录片《 Super Hummingbirds 》 - 纪录片1080P/720P/360P高清标清网盘迅雷下载
https://cdn.6867.top:6867/A1A/jp/enwiki/202204/24/02/fee0thpf0sd40.jpg外语原版纪录片《 Super Hummingbirds 》 - 纪录片1080P/720P/360P高清标清网盘迅雷下载
纪录片关键词：
Super Hummingbirds,David Attenborough's Conquest of the Skies,Documentary,Hummingbirds: Jewelled Messengers,Hummingbirds: Magic in the Air,The Life of Birds,Harry65,2016,English,Nature,PBS
Nature,Patricia Clarkson,PBS,PBS Nature,2016,English
纪录片内容简介:
General Information：
Nature Documentary hosted by Patricia Clarkson, published by PBS broadcasted as part of PBS Nature series in 2016- English narration
Information
Super Hummingbirds
Hummingbirds are amazing creatures to behold. They are the tiniest of birds, yet possess natural born super powers that enable them to fly backwards, upside-down, and float in mid-air. Their wings beat faster than the eye can see and the speed at which they travel makes people wonder if it was indeed a hummingbird they actually saw. They also are only found in the Americas. These attributes have both intrigued scientists and made it challenging to study the species, but with the latest high-speed cameras and other technologies, Super Hummingbirds reveals new scientific breakthroughs about these magical birds.
The film begins with the research of Dr. Alejandro Rico-Guevara, who returned to his native Colombia after getting his doctorate at the University of Connecticut (he’s currently a postdoctoral researcher at University of California at Berkeley), to determine how a hummer is able to lap up nectar inside a flower at a rate of 20 times a second. A hummingbird spends its days darting from flower to flower to drink the nectar so vital to fueling its metabolism to keep it in the air. To solve the mystery, Rico-Guevara mounted a real flower onto a clear feeding tube containing the same amount of nectar found in a genuine bloom. After attracting a hummer to the test site, high-speed macro photography revealed that the hummingbird’s long tongue has forked tips that open as the tongue dips into the nectar. Grooves are created along the edges of the open tips that collect and fill the tongue with nectar. Identifying this highly efficient means to drink nectar so rapidly was a scientific breakthrough never seen before.
Technical Specs
Video Codec: x264 CABAC High@L4.1
Video: Bitrate: CRF-22 (~2121 Kbps)
Video Aspect Ratio: 1280 x 720
Video Resolution: 1.778 (16:9)
Audio Codec: AAC LC
Audio: English
Audio Bitrate: 160 kb/s VBR 48 KHz
Audio Channels: Stereo 2
Run-Time: 53 mins,
Framerate: 25 fps
Number of Parts: 1
Container Mp4
Part Size: 864 MB
Source: HDTV
Encoded by: Harry65
Release Notes
Merged English Subtitles
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外语原版纪录片《 Super Hummingbirds 》 - 纪录片1080P/720P/360P高清标清网盘迅雷下载
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