from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of upcall.
Sorry, no etymologies found.
Each tag recorded from 2 to 18 calls, which included the whales 'greeting "upcalls" (seemingly questioning "hmm?" sounds that go from a low to high pitch - see video), as well as background noise-believed to come from commercial shipping.
Whales produce upcalls, sometimes called contact calls, when they are alone or in the process of joining with other whales.
These frequencies overlap with the frequencies of right whale upcalls.
Another implication for potential changes in whale calls is that upcalls are the whale calls that conservationists use to monitor right whale populations.
"Right whale upcalls are used extensively for passive acoustic monitoring in conservation efforts to protect this endangered species," said Parks.
And speaking of wake-upcalls and freebies, Lancaster, Pa. -based Auntie Anne's soft pretzel franchiser will give away original or cinnamonsugar pretzels from 10 a.m. to 3 p.m. on Free Pretzel Day, Feb. 20, as a "snacking wakeup call."