of spring, and whereas around the Great Lakes and in the St Lawrence drainage the counterpoint of the distinctive creaking call of the Western or Midland Chorus Frog, Pseudacris triseriata triseriata, assures listeners of diversity among the short whistled sleigh-bell notes of the more widespread Spring Peeper, Pseudacris crucifer, and whereas the presence of this species around the Great Lakes and St Lawrence, at the northeastern extremity of its range, is a reminder of the Hypsithermal, when, in the warm climates that immediately followed deglaciation, a peninsula of prairie habitat and species spread northeast between the Appalachians and the Shield, and whereas, Chorus Frogs have here depended on a traditionally diverse landscape to thrive, as have the Upland Sandpiper, Indigo Bunting, Loggerhead Shrike, and many other species which live around traditional agricultural habitats, but are now declining.
(the counterpoint of the distinctive creaking call of the Western or Midland Chorus Frog; assures; listeners of diversity; among the short whistled sleigh-bell notes of the more widespread Spring Peeper) (Chorus Frogs; have here depended; on a traditionally diverse landscape; to thrive) (the presence of this species around the Great Lakes and St Lawrence; is; a reminder of the Hypsithermal) (the warm climates; followed; deglaciation; T:immediately) (many other species; live; L:around traditional agricultural habitats) (a peninsula of prairie habitat and species; spread; L:northeast between the Appalachians and the Shield)
the counterpoint of the distinctive creaking call of the Western or Midland Chorus Frog Chorus Frogs the presence of this species around the Great Lakes and St Lawrence the warm climates many other species a peninsula of prairie habitat and species
assures have here depended is followed live spread
listeners of diversity among the short whistled sleigh-bell notes of the more widespread Spring Peeper
on a traditionally diverse landscape to thrive
a reminder of the Hypsithermal
deglaciation T:immediately
L:around traditional agricultural habitats
L:northeast between the Appalachians and the Shield