This video from Texas in the USA says about itself:
Broad-tailed Hummingbird Brings Nesting Material to Feeder – May 25, 2018
It’s the time of year when resident breeders are starting to build up their nests and lay eggs. Here a female Broad-tailed Hummingbird brings some nesting material (cotton fiber that is offered on site) to the feeder. After leaving and returning multiple times, the bird finally decides to toss the cotton over her head and take a drink!