Frogs and Toads in Montgomery County
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This document provides information on common frogs and toads found in Montgomery County, Maryland, including their identifying characteristics, habitats, ranges, and calling seasons. It includes descriptions and pictures of 14 species: Spring Peeper, Wood Frog, Upland Chorus Frog, Pickerel Frog, Southern Leopard Frog, American Toad, Fowler's Toad, Green Frog, American Bullfrog, Gray Treefrog, Cope's Gray Treefrog, Northern Cricket Frog, and provides additional resources for frogs and toads in other Northeastern and Southeastern states.
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Frogs and Toads in Montgomery County
- 1. Frogs and Toads of Montgomery County Maryland
- 2. Common Frogs and Toads of Montgomery County
- 3. Species Calling Calendar Species Feb March April May June July Aug Spring Peeper x x Wood Frog x x Upland Chorus Frog x x x Pickerel Frog x x Southern Leopard Frog x x x x American Toad x x x x x American Bullfrog x (late) x x x Fowler's Toad x (late) x x x Northern Green Frog x (late) x x x Gray Treefrog x x x Cope's Gray Treefrog x x x Northern Cricket Frog x x x x
- 4. Wood Frog Lithobates sylvaticus (formerly Rana sylvatica) © National Park Service
- 5. Wood Frog Size: 1 3/8-3 ¼ inches Striped appearance is common in Michigan’s Upper Peninsula and points north, un-striped found south and east. The only North American frog found north of the Arctic Circle. Currently being studied for their ability to live after freezing solid. © Jim Harding, MSU Habitat: Moist woodlands in eastern areas; open grasslands in western; tundra in the far north. Obligate seasonal pool breeder.
- 6. Wood Frog Range: Widespread throughout northern part of North America © USGS
- 7. Wood Frog Voice: Series of short raspy quacks Listen carefully! Call is somewhat muted and does not project or carry very far. Call produced through paired, lateral vocal sacs © Jim Harding, MSU
- 8. Spring Peeper (Pseudacris crucifer) © Jim Harding, MSU
- 9. Spring Peeper Size: ¾ -1 ½ inches The spring peeper is one of the most familiar frogs in the East, although it is heard far more often than seen. © Paul Crump, Houston Zoo Habitat: Wooded areas in or near temporarily flooded ponds and swamps
- 10. Spring Peeper Range: Maine to Georgia; Texas to East Coast. © USGS
- 11. Spring Peeper Voice: High-pitched ascending whistle, sometimes with a short trill, given once per second, in a multiple-frog chorus: peep, peep, peep. Agonistic call is a sharp preep, often confused with other chorus frog species. Males call from shrubs and trees near water or tucked low in emergent vegetation. © Jim Harding, MSU
- 12. Pickerel Frog (Lithobates (Rana) palustris) © Jim Harding, MSU
- 13. Pickerel Frog Size: 1¾ - 3 inches An irritating skin secretion makes this frog unappetizing to some predators. The secretion will kill other frogs kept in the same collecting container or terrarium. Habitat: Slow-moving waters and other damp areas preferably with low, dense vegetation; streams, swamps, and meadows © Paul Crump, Houston Zoo
- 16. Southern Leopard Frog (Lithobates sphenocephalus) © Dick Bartlett
- 17. Southern Leopard Frog Size: 2 - 5 inches To elude a predator this frog dives into the water, makes a sharp turn while still submerged, and surfaces amid vegetation at the water's edge. Frequently hunted for frogs' legs. © Dick Bartlett Habitat: Any freshwater location
- 19. Northern Cricket Frog (Acris crepitans) © Jim Harding, MSU
- 20. Northern Cricket Frog Size: 5/8 - 1 ½ inches Among the most agile leapers and can jump surprisingly long distances (5 - 6 feet) for its small size. © Jim Harding, MSU Habitat: Sunny ponds of shallow water with good growth of vegetation in the water or on the shore; slowmoving streams with sunny banks
- 23. American Toad (Anaxyrus americanus) Formerly Bufo americanus © Jim Harding, MSU
- 24. American Toad • • Toads lay eggs in a long string (e.g., note strands in the photo), while frogs lay them in clumps. • © Joe Greathouse, Oglebay’s Good Zoo Size: 2- 4 inches Habitat: Mowed grassy yards to forested mountains. Wherever there is abundant moisture and insects.
- 27. Fowler’s Toad Anaxyrus (Bufo) fowleri © Jim Harding, MSU
- 30. Fowler’s Toad Voice: Plaintive, descending, 1- to 4second "wraaaaaah.” Brash and nasal in quality. Produced through a single vocal sac. © Paul Crump, Houston Zoo
- 31. Green Frog (Lithobates (Rana) clamitans) © NOAA
- 35. American Bullfrog (Lithobates catesbianus) formerly Rana catesibana © USGS
- 36. American Bullfrog • • Large specimens have been known to catch and swallow small birds and young snakes • © Jim Harding, MSU The largest frog in North America. • © Paul Crump, Houston Zoo Size: 3 – 8 inches. Habitat: Ponds, lakes, slowmoving streams with vegetation. (Must be large enough to avoid crowding). Usually found on the bank at water’s edge. When frightened, the bullfrog is likely to flee into nearby vegetation.
- 39. Gray Treefrog (Hyla versicolor) © Jim Harding, MSU
- 42. Gray Treefrog Voice: A hearty, resonating trill, usually heard in spring and early summer. The Cope’s gray treefrog has half as many chromosomes as the gray treefrog. Its call is a faster, raspier less musical trill. © Jim Harding, MSU © Jim Harding, MSU
- 43. Cope’s Gray Treefrog (Hyla chrysoscelis) © Joe Greathouse, Oglebay’s Good Zoo
Notes de l'éditeur
- Explain which species are most common Mention how this chart differs year to year. Cold long winter vs short warm winter.
- Obligate seasonal pool breeder = must breed in small, temporary, fishless pools for optimal breeding success