A Guide to the Amphibians
and Reptiles of California
Click on a picture for a larger view
Eggs and Tadpoles of
Foothill Yellow-legged Frog - Rana boylii
Baird, 1854
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| Eggs in a Santa Clara County creek © Neil Keung |
Recently-laid egg mass attached to a rock in a creek in Linn County, Oregon | Egg mass attached to a rock in a creek in Linn County, Oregon | Eggs ready to hatch, Linn County, Oregon |
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| Egg masses underwater in a creek, Linn County, Oregon. Notice the silt covering the eggs. This helps to hide the eggs, reducing predation upon them. | In the foreground of the picture on the left, you can see the large mass of eggs shown in close-up on the right that dried out when either the water level dropped or, more likely, when a careless person removed the eggs from the water. |
An egg mass in a Sonoma County creek. © egret.org / Audubon Canyon Ranch |
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| Adult male and female in amplexus next to an egg mass in a Sonoma County creek. © egret.org / Audubon Canyon Ranch |
Adult and egg mass in creek, Marin County © Terry Goyan | Eggs seen from underwater, Humboldt County © Nathan McCanne | |
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| New hatchlings such as these and those to the right lie still on the bottom of the stream for a short time, Linn County, Oregon |
Recently-hatched tadpoles in water (from egg cluster below left) Linn County, Oregon |
Tadpole in water, Santa Clara County | |
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| Tadpole in water, Santa Clara County | Tadpole in water, Santa Clara County | Tadpole with rear legs, in water, Santa Clara County | |
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| Tadpoles in water, Douglas County, Oregon | Tadpole in water, Douglas County, Oregon |
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| Tadpole in water, Santa Clara County | Tadpole in water, Monterey County © David Hacker |
Tadpole with 4 legs, in water, Santa Clara County |
Tadpole underside and mouth in water attached to a glass surface. |
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| Comparisons of a California Red-legged Frog tadpole and a Foothill Yellow-legged Frog tadpole, both from Santa Clara County. © Owen Holt |
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| Rana boylii - Top Pseudacris regilla - Bottom Seen from above, the eyes of Rana boylii are located away from the side of the head and the eyes of Pseudacris regilla are located at the edge of the head. |
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| Eggs and Tadpole Habitat | |||
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| Breeding habitat with eggs attached to rocks in foreground, Linn County, Oregon |
Breeding habitat with eggs attached to rocks in foreground, Linn County, Oregon | Tadpole habitat, Santa Clara County | |
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| Tadpoles feeding in a rocky creek in Douglas County, Oregon. |
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