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FROGS ARE GREEN!

For over 200 million years, ponds, marshes, grasslands, and rain forests have come alive with the calls of frogs. Yet these remarkable and colorful animals are declining at such a rapid rate that they are being called the Earth’s next dinosaurs. According to the IUCN Red List of Threatened Species, a third of the world’s amphibian species are threatened with extinction. To read more, click here!

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Archive for the ‘frog calls’ Category

Today is Save the Frogs Day!

Friday, April 30th, 2010

Today is Save the Frogs Day, organized and created by conservation biologist Dr. Kerry Kriger. Tune in to hear an interview today with Dr. Kriger at 4:30 US Eastern or 1:30 PST (Sirius 112/XM 157) on Martha Stewart Living Radio.

As it’s been almost a year since we began the Frogs Are Green blog, we thought we’d share some thoughts about it with you. At first when we told our friends and family we were starting a blog to increase awareness about the global amphibian decline, they were a bit mystified, even amused. But I’m happy to say that a year later, almost all have become enthusiastic supporters. So we’d like to give you a few “talking points” in case you come across people who say with skepticism—frogs needs saving? Huh?

Frogs, of course, are not the only animals that need help, and we are personally involved with efforts to save other animals, particularly marine animals. But amphibians as a class of animals are threatened with extinction. That’s like saying that all mammals might soon be extinct. This is the largest mass extinction since the dinosaurs. Frogs have survived for 360 million years (and were on Earth long before the dinosaurs) and yet one-third or more of frog species are in danger of extinction.

Frogs are bioindicators—they reflect back to us the environmental health of our planet. Their permeable skin makes them especially vulnerable to environmental contaminants, such as agricultural, industrial, and pharmaceutical chemicals, particularly endocrine disruptors.  Frogs are manifesting reproductive deformities and hormonal disorders, possibly as a result of the stew of chemicals in the water in which they live. As endocrine distruptors are in the water we drink and are in dozens of consumer products we use everyday, we have reason to be concerned. Some scientists believe that an increase in the incidence of newborn baby boys born with genital deformities might be due to endocrine disruptors they have absorbed in utero.

Biodiversity is of critical importance to all of us—scientists still don’t fully understand how all elements interact in an ecosystem, but we do know that disasters occur when we alter even one small part of it (by introducing nonnative species etc). Frogs form an important part of ecosystems as both predator and prey.

While there is no cure yet for the chytrid fungus devastating frog populations, it should make us pause to consider that a whole class of animals could be wiped out by a worldwide fungus. Why aren’t frogs able to fight this off this infection? What are the underlying causes of the fungus? There are so many questions that need answers.

Frogs are subject to all the usual environmental woes—habitat loss, pollution, global warming, overcollection, invasive species. By helping frogs, we help other animals that might not have such a high profile (although frogs have a pretty low profile, all things considered). By focusing on the rainforest frogs, for example, we also help preserve the rainforest and its animals.

Frogs are part of our cultural heritage—our folktales, fairy tales, myths, children’s stories, and legends. In many cultures, they are a symbol of good luck, fertility, healing, prosperity, and are associated with rain and good harvests. And don’t forget our friends Kermit, and Frog and Toad, and Mr. Toad.

The amphibian decline is an environmental issue that you can do something about, possibly in your own backyard or neighborhood. We recently received a comment from a man in Georgia who decided not to fill in a pond on his property because he noticed that several frog species live in the pond. Another commenter from Pennsylvania has asked how he can create a frog pond in his backyard. You can lend your voice to land conservation efforts that protect vernal pools, for example.

Rachel Carson warned in her 1961 book Silent Spring about a world without birds. Can you imagine a world without frogs? Frogs, after all, are the Earth’s most ancient singers. We want to continue to hear their choruses for a long, long time.

So as you enjoy Save the Frogs day, listen to some frog songs. And please join us in helping to save frogs. We’d love to hear from you.

Wood Frogs Are (Almost) Celebrating Spring

Monday, February 22nd, 2010

In October, when we wrote our post Winter Turns Frogs into Frogsicles, the wood frogs and spring peepers had settled down for their long (frozen) winter nap. This blog post from The National Parks Traveler, Frogs are a Sure Sign of Spring, But that Doesn’t Mean You Won’t Hear Them Now, reminds us that even though it’s still winter (at least in the Northeast), it’s almost spring for the wood frogs. As the snow melts and the frogs unfreeze in late winter/early spring,  the young frogs have one thing on their minds: the males start calling immediately to potential mates.

I found this lovely video on YouTube by someone called Mysterious Susan (not our Susan though). It does have a mysterious quality as a reminder of the cycle of life.

Also, check out this blog post, “As Winter Wanes,”  in the East Hampton (Long Island, New York) Star about what songbirds, salamanders, and other animals are up to as we approach spring and the daylight hours get longer every day.

Pacific Chorus Frogs Spend the Holidays in Alaska

Wednesday, December 30th, 2009

This holiday season, some Alaskans found “live” ornaments on their Christmas trees—Pacific Chorus frogs that hitchhiked in the trees to Alaska.

Coutesy of the Alaska Department of Fish and Game

Courtesy of the Alaska Department of Fish and Game

Unfortunately, these little stowaways were not warmly received by the Alaska Department of Fish and Game. They are considered invasive species as they might carry fungi and viruses that could harm native frog species.

I imagine these frogs would be happier if they were sent home. Pacific Chorus frogs are native to Pacific coastal areas from Baja California up to Washington State. According to Lang Elliott in The Frogs and Toads of North America, its familiar two-part call, rib-bit, is the one most associated with frogs because they have provided the background “music” for so many Hollywood movies and TV shows.

Here’s the call of the Pacific Chorus frog in its native habitat—far from Juneau.

Frog Call of the Week: Jeremiah the Bullfrog

Thursday, November 19th, 2009

Jeremiah (the American bullfrog) is our largest native frog, growing from 6 to 8 inches in length. Bullfrogs are found throughout most of North America. They like to hang out in large bodies of water like lakes, ponds, and slow-moving streams. Where bullfrogs have been introduced (for example, in the western U.S.), they have become pests because they eat anything smaller than themselves, including native frogs.

The bullfrogs call sounds like rumm….rumm…rumm….or a stuttering ru-u-u-umm…ru-u-u-umm (often written as jug-a-rum).*

I picked up a book recently called The Frog Book, written in 1906 by herpetologist Mary C. Dickerson. She wrote beautiful descriptions of the amphibians she studied. Here’s her description of the bullfrog call:

If we go rowing on river, lake, or park lagoon some moonlight night in late June [in the northeast], we are certain to hear the deep-tone call of the Bullfrog many times. Coming as it does at unexpected intervals and from unexpected directions, it seems startlingly weird in the quiet of night. For June nights are quiet. The insect orchestras are not in full swing, and the frog choruses have disbanded. The Bullfrog does not sing in chorus; the call is an isolated one. The notes are so low that we think of him as the bass viola among frogs. The call resembles, to a considerable degree, the roar of a distant bull..

Here’s a video of a bullfrog calling, created by Ravenswood Media. Enjoy!

Info from The Calls of Frogs and Toads by Lang Elliott and The Frogs and Toads of North America by Lang Elliott, Carl Gerhardt, and Carlos Davidson. Both books include CDs of frog calls.