This video from the USA says about itself:
Juvenile Male Magnificent Hummingbird Stops By for a Show
18 August 2016
Watch this clip of a juvenile male Magnificent Hummingbird flying up to the left side of the feeder before switching to the right. The scaly appearance of the breast and underparts along with flashes of the iridescent turquoise gorget and metallic purple above the eyes are characteristic of a juvenile male.
Watch live at http://AllAboutBirds.org/TexasHummers.
The West Texas Hummingbird Feeder Cam is nestled in the mountains outside Fort Davis, Texas, at an elevation of over 6200 feet. This site hosts a total of 24 Perky-Pet® Grand Master hummingbird feeders, and during peak migration can attract hundreds of hummingbirds from a dozen species that are migrating through the arid mountains.
For the past 10 years, researchers from West Texas Avian Research have been banding hummingbirds at this site and others throughout the Trans-Pecos region of Texas to study the status and distribution of hummingbirds throughout the poorly known region.
The active banding of hummingbirds continues (off camera) at this site in the Davis Mountains, and from time to time you may hear researchers working in the background. Some common species in you may hear vocalizing include Western Scrub Jays, Acorn Woodpeckers, and Canyon Wrens (among others).
Thanks to West Texas Avian Research for their enthusiasm and support for hosting the camera at this remote research site, and to cam sponsor Perky-Pet®.