Pacific Treefrog

Pseudacris regilla

The Pacific tree frog, also known as the Pacific chorus frog, has a range spanning the Pacific Northwest, from Northern California, Oregon, and Washington to British Columbia in Canada and extreme southern Alaska. They live from sea level to more than 10,000 feet in many types of habitats, reproducing in aquatic settings. They occur in shades of greens or browns and can change colors over periods of hours and weeks. Source

Where it is now

In the last 8 weeks this frog or toad was recorded 27 times across 3 areas (each area is a 5 degree square).

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Movement and weather

Over the weeks it was present in the past year, its centre in North America ranged from 38°N in December to 46°N in September, about 1,000 km apart.

Arrival dates

The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.