Nodding flowers are best adapted for the long hummingbird beak. Hummingbirds intrigue with their tiny bodies and rapidly fluttering, buzzing wings. They are a joy to watch and planting a garden to attract hummingbirds is rewarding. When planning, there is more to consider than color when choosing plants.
So, while pretty much everyone can hear frequencies of 8,000 Hz, most people over the age of 40 canât hear 15,000 Hz. Note that YouTube has compressed this video so, unfortunately the 19,000 Hz frequency has been lost. But that doesnât matter to me because I didnât come anywhere close to being able to hear it. Sigh. Go and watch the video above to find out how young (or old) your ears really are and prepare to be depressed.
Normal human hearing ranges from 20 hertz to 20,000 hertz. Low-frequency sounds, below 20 hertz, are referred to as âinfrasoundâ and travel farther than high-frequency sounds. Frequencies above the range of human hearing (20,000 hertz) are referred to as âultrasonic.â.lthough the upper end of human hearing is about 20,000 hertz, deer can hear frequencies to at least 30,000 hertz. But, these high-frequency sounds must be louder because high-frequency sounds donât travel as far as low-frequency sounds. Hearing and Vocal Communication.