Larch Creek Birds

What the birds (and frogs) are saying at a creek in western Washington
Plate 29
Pacific chorus frog
Mary Cynthia Dickerson (1866–1923), 1906
Frog

Pacific chorus frog

Pseudacris regilla
Hylidae
Heading outFrog
Resident, scarcer in winter. Here most of the year, with a dip in winter. Moving on: expectation falls from 83% now to 65% a month from now.
Field marks
A small, smooth frog, green to brown or grey (it can change over a few days), with a dark mask through the eye and sticky toe pads.
Male & female
Males are smaller with a dark, loose throat sac; females have a pale throat.
Voice
The two-note 'rib-bit' heard in every film ever made, regardless of continent, and a dry 'krr-r-r-ek' land call in autumn.
Diet
Insects and spiders.
Habitat
Ponds, ditches and wet meadows in spring; damp woods and gardens the rest of the year, including the inside of garden hoses.
Nesting
Small egg clusters attached to submerged stems from January to May.
Size
1–2 in long, lighter than a sugar packet, louder than the neighbour's leaf blower.

The frog that gives the creek its spring chorus. Autumn rains trigger scattered calling again, which is what Perch is picking up now.

Season how expected it is here, week by week

50%100%JanFebMarAprMayJunJulAugSepOctNovDecheard at the creektoday
Fig. 1. BirdNET's range model for this location: the chance this species is present in each week of the year. Orange ticks mark weeks it has actually been heard at the creek; the dashed line is today.

At the creek 15 calls on 2 days, first Oct 29, last Oct 31

4900:00 — 0 calls001:00 — 0 calls02:00 — 0 calls03:00 — 0 calls304:00 — 0 calls05:00 — 0 calls06:00 — 0 calls607:00 — 0 calls08:00 — 0 calls09:00 — 2 calls910:00 — 1 calls11:00 — 2 calls12:00 — 0 calls1213:00 — 1 calls14:00 — 0 calls15:00 — 0 calls1516:00 — 9 calls17:00 — 0 calls18:00 — 0 calls1819:00 — 0 calls20:00 — 0 calls21:00 — 0 calls2122:00 — 0 calls23:00 — 0 callssunrisesunset
Fig. 2. When it calls: all detections by hour of day (today's sunrise and sunset shown).
613Oct 2 — 0 callsOct 3 — 0 callsOct 3Oct 4 — 0 callsOct 5 — 0 callsOct 6 — 0 callsOct 7 — 0 callsOct 8 — 0 callsOct 9 — 0 callsOct 10 — 0 callsOct 10Oct 11 — 0 callsOct 12 — 0 callsOct 13 — 0 callsOct 14 — 0 callsOct 15 — 0 callsOct 16 — 0 callsOct 17 — 0 callsOct 17Oct 18 — 0 callsOct 19 — 0 callsOct 20 — 0 callsOct 21 — 0 callsOct 22 — 0 callsOct 23 — 0 callsOct 24 — 0 callsOct 24Oct 25 — 0 callsOct 26 — 0 callsOct 27 — 0 callsOct 28 — 0 callsOct 29 — 13 callsOct 30 — 0 callsOct 31 — 2 callsOct 31
Fig. 3. Calls per day over the last 30 days.

Recordings

Clearest recording · Oct 29 4:14 pm · 93% sure
spectrogram
Recent · Oct 31 4:08 pm · 90% sure
spectrogram
Recent · Oct 31 1:35 pm · 91% sure
spectrogram
Recent · Oct 29 4:30 pm · 91% sure
spectrogram

From the encyclopedia

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.
From Wikipedia, "Pacific tree frog", CC BY-SA 4.0.