Foothill Yellow-legged Frog
Foothill Yellow-legged FrogFoothill Yellow-legged FrogFoothill Yellow-legged FrogFoothill Yellow-legged Frog

Foothill Yellow-legged Frog

Rana boylii

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
40–50% · Likely
overall probability at Redwood National Park
197 Verified records at Redwood National Park
October Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

The foothill yellow-legged frog (Rana boylii) is a small-sized (3.72–8.2 cm or 1.46–3.23 in) frog from the genus Rana in the family Ranidae. This species was historically found in the Coast Ranges from northern Oregon, through California, and into Baja California, Mexico as well as in the foothills of the Sierra Nevada and southern Cascade Range in California. The foothill yellow-legged frog is a Federal Species of Concern and California State Endangered. A federal rule to list four out of six extant distinct population segments (DPS) under the Endangered Species Act was proposed in December 2021. Wikipedia →

40–50% of wildlife watchers report a Foothill Yellow-legged Frog sighting in Redwood National Park, based on 197 days of visitor records from GBIF citizen-science data.

Closest Relatives at Redwood National Park

Northern Red-legged Frog
LC

Northern Red-legged Frog

☀️ Diurnal Amphibian

Rana aurora

50–60% · Likely
American Bullfrog

American Bullfrog

☀️🌙 Day & Night Amphibian

Lithobates catesbeianus

5–10% · With luck
Western Toad
LC

Western Toad

☀️🌙 Day & Night Amphibian

Anaxyrus boreas

40–50% · Likely
Pacific chorus frog
LC

Pacific chorus frog

☀️ Diurnal Amphibian

Pseudacris regilla

40–50% · Possible
Coastal Tailed Frog
LC

Coastal Tailed Frog

☀️ Diurnal Amphibian

Ascaphus truei

20–30% · Possible

📅 Monthly Probability

20–30
Jan
30–40
Feb
50–60
Mar
40–50
Apr
50–60
May
50–60
Jun
50–60
Jul
50–60
Aug
40–50
Sep
50–60
Oct
30–40
Nov
20–30
Dec

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Redwood National Park 🇺🇸 United States
40–50%

More parks will be added in future updates.

Quick answers

What are the chances of seeing a Foothill Yellow-legged Frog in Redwood National Park?

About 49% of wildlife watchers report a Foothill Yellow-legged Frog sighting in Redwood National Park, based on 197 days of visitor records from GBIF citizen-science data.

When is the best time to see Foothill Yellow-legged Frog in Redwood National Park?

October has the highest sighting rate for Foothill Yellow-legged Frog in Redwood National Park in our monthly data.

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