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O’Neall Ecological Reserve

Northern Leopard Frog at O'Neall Ecological Reserve

The O’Neall Ecological Reserve was donated to the Department of Biological Sciences by Robin O’Neall. This 100 acre site, located along the Portneuf River between McCammon and Inkom, contains riparian areas along the river and upland areas on lava benches. Riparian areas include several permanent ponds that are used as nesting sites by a variety of bird species. This site has been used by faculty, graduate students, and classes for studies of magpie behavior, amphibians, vegetation, and insects.

An aerial image of the O’Neall Reserve is below. The parallel lines on the left (west) side of the image are Interstate 15. The Union Pacific railroad tracks are the next linear feature to the right, curving east of due north in the upper half of the image. The Portneuf River is the dark line immediately to the right (east) of the railroad tracks. Some of the old oxbows that were cut off by the railroad are visible to the left of the railroad tracks in the lower half of the image.

Aerial image of O'Neall Reserve

Species Found at the O’Neall Ecological Reserve


Amphibians and reptiles found at the reserve.
Sagebrush Lizard
Common NameScientific Name
Northern leopard frog
Boreal chorus frog
Tiger salamander
Western Terrestrial Garter Snake
Common Garter Snake
Gopher snake
Sagebrush lizard
Western skink
Rana pipiens
Pseudacris maculata
Ambystoma tigrinum
Thamnophis elegans
Thamnophis sirtalis
Pituophus catenifer
Sceloporus graciosus
Eumeces skiltonianus
At least 15 species of odonata (dragonflies and damselflies) are found at the reserve.
Common NameScientific Name
Variable darner
Common green darner
Western pondhawk
Dot-tailed whiteface
Eight-spotted skimmer
Common Whitetail
Twelve-spotted skimmer
Four-spotted skimmer
Variegated meadowhawk
Plains clubtail
Pale snaketail
Boreal bluet
Tule bluet
Pacific forktail
Western forktail
Emerald spreadwing

Aeshna interrupta
Anax junius
Erythemis collocata
Leucorrhinia intacta
Libellula forensis
L. lydia
L. pulchella
L. quadrimaculata
Sympetrum corruptum
Gomphus externus
Ophiogomphus severus severus
Enallagma boreale
E. carunculatum
Ischnura cervula
I. perparva
Lestes dryas
Other Lestes spp.?

For more information about these and other amphibians/reptiles and dragonflies/damselflies of Idaho (including pictures and a visual key), visit the Digital Atlas of Idaho's webpage.

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