Contents tagged with frogs
Created: 4/8/2015 Updated: 8/2/2016
April is National Frog Month, and we're marking it with weekly frog and toad-focused live feedings, as well as weekly frog and toad Critter Connections. Since these toad-ally cool critters are going to be in the spotlight this month, we thought we would take a closer look at the different species you might find in Mysteries of the Marsh and our Look-In Lab.
Northern Leopard Frog
Although they can have lots of color variations, the most common variations are green and brown. As the name implies, they are distinguishable by the large, dark circular spots on their back, sides and legs, which are normally bordered by a lighter ring. They're often found in ponds, swamps, marshes, and slow-moving streams, preferring to inhabit bodies of water that have abundant aquatic vegetation. In the summer, they'll actually leave the ponds and move to grassier areas and lawns.
Although the Pickerel and Leopard frogs are similar at a glance, you can tell them apart by taking a closer look at their spots -- while Leopard Frogs have circular spots, Pickerels have irregular rectangular spots. Pickerel Frogs are also uncommon in Illinois, while Leopard Frogs are widesparead. Northern Pickerel Frogs prefer to live near cold, clear water, preferring rocky ravines, bogs and meadow streams. They can also be found around lakes and rivers that are heavily wooded. Unlike many of our other native frogs, Pickerels have a unique defense mechanism -- they can emit skin secretions which are actually toxic to some predators. For humans, the secretions generally only cause skin irritation, but it's important to wash your hands after handling them. This clever defense mechanism makes the Pickerel the only poisonous frog native to the United States!
Northern Cricket Frog
These small, warty frogs generally grow between 1.5 and 3.5 centimeters long. Unlike other frogs, they actually don’t have toe pads, which you can see if you look closely. They can be gray, brown or green and prefer open, shallow water with plenty of vegetation. And, as you probably guessed, their calls resemble that of a cricket.
Gray Tree Frog
While their name suggests that they're only gray in color, Gray Tree Frogs are generally gray, green or brown depending on what they’re sitting on. They can actually change their camouflage from nearly black to nearly white, though they do change at a slower rate than a chameleon. Also, as their name would suggest, they're common in forested areas and are highly arboreal. In fact, they rarely ever descend from the treetops, with the main exception of breeding. Their calls are often heard in rural residential areas of the east coast and Midwest.
Want more National Frog Month fun? Hop on over to our Instagram account! We'll be featuring a new frog or toad friend every Friday as part of our month-long #FrogFriday series. Not on Instagram? You can still follow along by jumping over to our Twitter account or Facebook page!View Comments
Created: 11/24/2014 Updated: 8/8/2016
The first full weekend of every month, the Nature Museum becomes a herpetologist haven! That's when the Chicago Herpetological Society sets up tables in the Nature Walk for some reptile fun with the public and the Junior Herp Society holds their monthly meetings!
Join us for the herp enclosure workshop!
The Chicago Junior Herpetological Society is about sharing the love of amphibians and reptiles with the younger generation, and fostering an appreciation of wildlife and nature through educational speakers and hands-on interaction.
We had lots of fun at the November meeting. Patrick Carroll joined us with many of his awesome lizards for a discussion in Colleen’s Critter Corner, and Yvette Mendez joined us for a discussion of reptile reproduction.
The regular monthly meetings of the Chicago Junior Herpetological Society take place at The Peggy Notebaert Nature Museum, on the Sunday of the first full weekend every month, from noon till about 1:30. Meetings are free to members of the CHS and visitors to the museum. The next meeting will be on Sunday, December 7th. We will have a herp enclosure workshop, discussing different enclosures, substrates, heating methods, lighting and keeping them clean. This will be a fun and informative meeting!
You can learn more about the CJHS here.
The Chicago Herpetological Society is a non-profit all volunteer organization dedicated to the conservation of all wildlife, especially reptiles and amphibians, the cooperation of amateur and professional herpetologists toward a more complete understanding of herpetofauna, and the education of the general public about these often misunderstood but fascinating animals.
When considering getting a new pet for the family, a great option to consider is adoption. There are many awesome animals out there in need of a loving home. The CHS has an adoption program available to members. There are currently some ball pythons, box turtles and other great critters being fostered and ready for a new forever home. Contact Colleen Schwarz or Linda Malawy of the CHS adoption program.
You can learn more about CHS adoptions here.
If you like anacondas, jaguars and hyacinth macaws, come see Dr. Steve Barten’s talk on the Wildlife of the Pantanal, Brazil, at the November 26 CHS general meeting. He promises a ton of animal photos. The Pantanal of central-western Brazil is the world's largest wetland ecosystem, covering an area 15 times the size of the Everglades (it's also bigger than 29 of the states in the U.S.). It has the densest population of crocodilians--Yacare Caimans--found anywhere in the world, and is a great place to find yellow anacondas. It also is one of the best places in the world to see wild jaguars, giant river otters, giant anteaters, tapirs, howler and capuchin monkeys, coatis, and capybaras, as well as the critically endangered hyacinth macaw and over 650 other species of birds. Steve Barten toured the Pantanal by bus, truck, boat, and foot, which allowed him close approach and photography of the wildlife. The highlight was witnessing a jaguar catch a 6-foot caiman.
General meetings of the Chicago Herpetological Society are held on the last Wednesday every month at 7:30pm at the Notebaert, with the exception of Christmas Eve this year. That meeting has been changed to Tuesday, Dec. 30th. Meetings are free to attend. We are also gearing up for next year’s ReptileFest, the nation’s largest educational herpetological event. ReptileFest 2015 will be on April 11 and 12, from 10am to 5pm in the University of Illinois Phys Ed building. Mark your calendars, this will be the 22nd year of this wonderful show.
Hope to see you there!
CHS, CJHSView Comments
Created: 8/7/2014 Updated: 8/9/2016
At the Peggy Notebaert Nature Museum, volunteers feed different groups of animals on different days as part of public interpretative programs (PIP). Recently, to keep things fresh for volunteers and visitors, the schedule was shuffled, and now aquatic animals are fed on Monday, fish on Tuesday, Blanding’s turtles on Wednesday, water snakes on Thursday, box turtles on Friday, and endangered turtles on Saturday.
Leopard Frog wearing his lunch
And on Sunday, frog and toad feeding takes place in the Look-in-Lab, where the volunteers offer crickets by hand or tweezers to the anurans in tanks along the viewing window. (Frogs and toads belong to the order of amphibians called “anura” so collectively are referred to as “anurans.”) The session is entertaining for visitors; they laugh when a volunteer involuntarily jerks her hand back as the critter grabs mouth first for its meal (you tell yourself not to, but it is a reflex that is hard to overcome), and they applaud when the critter gets the cricket. To make the feeding educational as well, other volunteers stand on the public side of the window to provide visitors information about frog and toad diets and habits.
Frogs and toads are usually sit-and-wait predators, relying on camouflage to hide their motionless bodies until an unsuspecting potential meal moves within reach of a lunge and “lingual flip:” the tongue flips out and slaps on the target and then flips back with the prey stuck on. This capture technique is made possible by a tongue that is attached to the front of the jaw and free at the back (unlike those of humans and other animals) and by a gummy mucous exuded at the instant of contact. Thus, the anuran tongue does not shoot out like the tongue of a chameleon or a cartoon frog. The whole action takes less than 15/100ths of a second, faster than our eyes can follow. Below is a cool, slow motion video of a leopard frog flipping up a waxworm with its tongue.
Frogs and toads have teeth but only along their upper jaws. Their teeth are weak and are not used to chew or tear, but to hold prey before it is gulped down whole. Their eyes help anurans swallow their meals; an emphatic blink presses their eyeballs through holes in the skull, pushing food down the throat.
Most frogs and toads eat insects, spiders, worms, larvae, and slugs, although larger species may also eat small birds, reptiles, or amphibians. Every two to three weeks, the Museum orders 2,500 crickets (1,000 small, 1,000 medium, and 500 large) -- between 65,000 and 44,000 a year. They are fed not only to the frogs and toads, but also to the Museum’s salamanders, some turtles, aquatic insects, and spiders.
The Museum has 12 species of anurans, all also found wild in Illinois: Fowler’s toad, American toad, pickerel frog, green frog, leopard frog, plains leopard frog, chorus frog, cricket frog, wood frog, green tree frog, Cope’s tree frog, and gray tree frog.
Cindy GrayView Comments
PIP and Animal Care Volunteer