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For example, the same study had shown that in certain parts of Illinois that are more industrialized and had organochlorine peptides there was a larger proportion of intersex frogs. In the case of Illinois, this was in the northeast. However, more environmentally friendly regions, like southern Illinois, had a more diverse frog population. [22]
The Illinois chorus frog, a wetland amphibian, grows to a maximum length of 1.5 inches (3.8 cm).Its range is restricted to isolated sandy wetlands along the banks of the Mississippi River and a major tributary, the Illinois River.
The eyes assist in the swallowing of food as they can be retracted through holes in the skull and help push food down the throat. [54] [76] The food then moves through the oesophagus into the stomach where digestive enzymes are added and it is churned up. It then proceeds to the small intestine (duodenum and ileum) where most digestion occurs.
Two burnsi morphs, a green morph, and a brown morph of the northern leopard frog Brown morph northern leopard frog in a wood chip pile in Iowa. The northern leopard frog has several different color variations, with the most common two being the green and the brown morphs, with another morph known as the burnsi morph. Individuals with the burnsi morph coloration lack spots on their backs, but ...
Pig frogs are opportunistic feeders and will eat a wide variety of prey, including insects, worms, and small vertebrates. Their primary diet is crawfish, but like most bullfrogs, they will consume almost anything they can swallow, including insects, fish, and other frogs. They are known to feed on beetles, dragonflies, crayfish, and other ...
Pickerel frogs have varied habitats, the northern populations prefer to live near cold, clear water. They prefer rocky ravines, bogs and meadow streams, but can be found around lakes and rivers that are heavily wooded. In a study on amphibians in Canada, pickerel frogs were negatively associated with young forest stands. [6]
[3] [9] [23] The diet of Cope's gray treefrog primarily consists of insects such as moths, mites, spiders, plant lice, and harvestmen. Snails have also been observed as a food source. Like most frogs, Dryophytes chrysocelis is an opportunistic feeder and may also eat smaller frogs, including other treefrogs. [24]
The fauna of Illinois include a wide variety of mammals, birds, amphibians, reptiles, fish and insects (not listed). The state bird is the Northern cardinal. The state insect is the monarch butterfly. The state animal is the white-tailed deer. The state fish is the bluegill. The state fossil is the tully monster.