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  • Chicago Herpetological Society
    List Next Fowler s Toad Bufo fowleri Illinois Natural History Survey Range Map Events Calendar General Meetings Speakers Board Meetings ReptileFest Features CHS Bulletin Herps of Illinois Member Articles Mailing List Info Membership Bylaws Grants CHS Position Paper Contacts Adoptions

    Original URL path: http://www.chicagoherp.org/index.php?link=species&row=22 (2016-02-01)
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  • Chicago Herpetological Society
    List Next Eastern Narrowmouth Toad Gastrophryne carolinensis Illinois Natural History Survey Range Map Events Calendar General Meetings Speakers Board Meetings ReptileFest Features CHS Bulletin Herps of Illinois Member Articles Mailing List Info Membership Bylaws Grants CHS Position Paper Contacts Adoptions

    Original URL path: http://www.chicagoherp.org/index.php?link=species&row=23 (2016-02-01)
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  • Chicago Herpetological Society
    List Next Bird Voiced Treefrog Hyla avivoca Illinois Natural History Survey Range Map Events Calendar General Meetings Speakers Board Meetings ReptileFest Features CHS Bulletin Herps of Illinois Member Articles Mailing List Info Membership Bylaws Grants CHS Position Paper Contacts Adoptions

    Original URL path: http://www.chicagoherp.org/index.php?link=species&row=24 (2016-02-01)
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  • Chicago Herpetological Society
    are similar in appearance In general the Cope s Gray Treefog tends to be smaller and have smoother skin than the Gray Treefrog and it is often bright green when calling Nevertheless these character traits overlap making them unreliable for identification Their calls are different as well however you would have to be quite an expert to be confident about the identification Another difference is that the Cope s Gray Treefrog has a diploid complement of chromosomes and the Gray Treefrog is tetraploid so blood tests and chromosome analysis can distinguish the two although this technique is not available to the average person Illinois Natural History Survey Range Map Hyla versicolor Hyla chrysoscelis Hyla versicolor chrysoscelis Copes Gray Treefrog Hyla chrysoscelis Gray Treefrog showing the bright flash color normally hidden on the hind legs This color is used to startle and confuse predators A predator sees bright yellow hopping When the frog stops and tucks in his legs the bright color is instantly gone The following following four photographs were taken of a single individual frog over a 24 hour period and show the remarkable degree of color change they can undergo The frog gradually changes color from gray to

    Original URL path: http://www.chicagoherp.org/index.php?link=species&row=25 (2016-02-01)
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  • Chicago Herpetological Society
    Species List Next Green Treefrog Hyla cinerea Illinois Natural History Survey Range Map Events Calendar General Meetings Speakers Board Meetings ReptileFest Features CHS Bulletin Herps of Illinois Member Articles Mailing List Info Membership Bylaws Grants CHS Position Paper Contacts Adoptions

    Original URL path: http://www.chicagoherp.org/index.php?link=species&row=26 (2016-02-01)
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  • Chicago Herpetological Society
    are similar in appearance In general the Cope s Gray Treefog tends to be smaller and have smoother skin than the Gray Treefrog and it is often bright green when calling Nevertheless these character traits overlap making them unreliable for identification Their calls are different as well however you would have to be quite an expert to be confident about the identification Another difference is that the Cope s Gray Treefrog has a diploid complement of chromosomes and the Gray Treefrog is tetraploid so blood tests and chromosome analysis can distinguish the two although this technique is not available to the average person Illinois Natural History Survey Range Map Hyla versicolor Hyla chrysoscelis Hyla versicolor chrysoscelis Copes Gray Treefrog Hyla chrysoscelis Gray Treefrog showing the bright flash color normally hidden on the hind legs This color is used to startle and confuse predators A predator sees bright yellow hopping When the frog stops and tucks in his legs the bright color is instantly gone The following following four photographs were taken of a single individual frog over a 24 hour period and show the remarkable degree of color change they can undergo The frog gradually changes color from gray to

    Original URL path: http://www.chicagoherp.org/index.php?link=species&row=27 (2016-02-01)
    Open archived version from archive

  • Chicago Herpetological Society
    are similar in appearance In general the Cope s Gray Treefog tends to be smaller and have smoother skin than the Gray Treefrog and it is often bright green when calling Nevertheless these character traits overlap making them unreliable for identification Their calls are different as well however you would have to be quite an expert to be confident about the identification Another difference is that the Cope s Gray Treefrog has a diploid complement of chromosomes and the Gray Treefrog is tetraploid so blood tests and chromosome analysis can distinguish the two although this technique is not available to the average person Illinois Natural History Survey Range Map Hyla versicolor Hyla chrysoscelis Hyla versicolor chrysoscelis Copes Gray Treefrog Hyla chrysoscelis Gray Treefrog showing the bright flash color normally hidden on the hind legs This color is used to startle and confuse predators A predator sees bright yellow hopping When the frog stops and tucks in his legs the bright color is instantly gone The following following four photographs were taken of a single individual frog over a 24 hour period and show the remarkable degree of color change they can undergo The frog gradually changes color from gray to

    Original URL path: http://www.chicagoherp.org/index.php?link=species&row=28 (2016-02-01)
    Open archived version from archive

  • Chicago Herpetological Society
    Species List Next Spring Peeper Pseudacris crucifer Illinois Natural History Survey Range Map Events Calendar General Meetings Speakers Board Meetings ReptileFest Features CHS Bulletin Herps of Illinois Member Articles Mailing List Info Membership Bylaws Grants CHS Position Paper Contacts Adoptions

    Original URL path: http://www.chicagoherp.org/index.php?link=species&row=29 (2016-02-01)
    Open archived version from archive