upcalls

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.

Discover Blogs 2010

Whales produce upcalls, sometimes called contact calls, when they are alone or in the process of joining with other whales.

Penn State Live 2010

These frequencies overlap with the frequencies of right whale upcalls.

Penn State Live 2010

Another implication for potential changes in whale calls is that upcalls are the whale calls that conservationists use to monitor right whale populations.

Penn State Live 2010

"Right whale upcalls are used extensively for passive acoustic monitoring in conservation efforts to protect this endangered species," said Parks.

Penn State Live 2010

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."

Arkansas Online stories < 2010

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."

Arkansas Online stories < 2010

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."

Arkansas Online stories 2010

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."

Arkansas Online stories 2010