This video is from the USA.
According to the YouTube text:
A few clips from the summer of 2006 in slow motion including one of a ruby-throat[ed] hummingbird following my finger pointing direction.
Ruby-throated hummingbird: here.
Evolutionary associations between nectar properties and specificity in bird pollination systems: here.
- Researchers Abuzz Over Visiting Western Hummingbirds (philadelphia.cbslocal.com)
- Vol. 2, No. 3 – The Ruby-Throated Humming Bird (leesbird.com)
- USA Bird Supply Offers 10 Ways To Help Hummingbirds During Their Fall Migration (prweb.com)
- Lost Hummingbird (yardcrap.typepad.com)
- Video: Tricks of the Hummingbird’s Tongue (news.sciencemag.org)
- A Place to Mend a Broken Wing (cityroom.blogs.nytimes.com)
- Hummingbirds on display in South Texas yards (caller.com)
- High-speed video and artificial flowers shed light on mysteries of hummingbird-pollinated flowers (esciencenews.com)
- High-Speed Video Investigates Mystery of Hummingbird Pollination (wired.com)