Kenai Fjords NPS | Bat Echolocation Calls in Nuka Bay, Kenai Fjords National Park @KenaiFjordsNP | Uploaded October 2018 | Updated October 2024, 2 hours ago.
Bat echolocation recorded in the pictured canyon in Nuka Bay, one of the fjords of the park. Audio heard here and the spectrogram exhibit the lower frequency white noise of a nearby flowing stream and the high frequency echolocation calls of a bat foraging for insects.
To forage, bats (which generally have poor vision) emit clicks that bounce off nearby objects. As the bat gets closer to its prey, the clicks get closer together until they sound like a buzz. This is known as a feeding buzz and allows the bat to hone in on its target. Then, SNATCH! The bug becomes a meal.
Between August and September 2018, park scientists recorded bat activity in every fjord of Kenai Fjords to begin to determine the presence and location of bats within the park.
Bat echolocation recorded in the pictured canyon in Nuka Bay, one of the fjords of the park. Audio heard here and the spectrogram exhibit the lower frequency white noise of a nearby flowing stream and the high frequency echolocation calls of a bat foraging for insects.
To forage, bats (which generally have poor vision) emit clicks that bounce off nearby objects. As the bat gets closer to its prey, the clicks get closer together until they sound like a buzz. This is known as a feeding buzz and allows the bat to hone in on its target. Then, SNATCH! The bug becomes a meal.
Between August and September 2018, park scientists recorded bat activity in every fjord of Kenai Fjords to begin to determine the presence and location of bats within the park.
