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Spring frog & toad choruses of the Andalusian marshes

Bright green Mediterranean tree frog on a leaf
Mediterranean tree frog. Photo: Bernard DUPONT from FRANCE, CC BY-SA 2.0

Perez's frog (Pelophylax perezi), Mediterranean tree frog (Hyla meridionalis), natterjack, Iberian spadefoot, western spadefoot, parsley frog. Doñana buffer, Odiel, Cádiz lagoons, Spain.

Best time: 15 Mar – 10 May (March to May). Where: El Rocío – Madre de las Marismas boardwalk, Dehesa de Abajo, La Puebla del Río, Marismas del Odiel (Huelva) (Spain). Time of day: Choruses start at dusk, reach full volume 1–2 h after dark and run to about 02:00 on mild nights.

Open it in the interactive calendarSunrise and sunset listening times for the day you pick, and the map.

When is the best time?

Peak: 15 Mar – 10 May. Mid March to early May, warm humid nights after rain

Active from 15 Feb to 15 Jun (February to June) in a typical year.

Time of day

Choruses start at dusk, reach full volume 1–2 h after dark and run to about 02:00 on mild nights; spadefoots call underwater in the same window.

What will you hear?

Massive Perez's frog choruses from the temporary lagoons, tree frog 'crra-crra' from the marsh edge, natterjack ratchets across the dune slacks, spadefoots' hen-like clucking from underwater, plus stone-curlews, red-necked nightjars and scops owls.

Binoculars?

No binoculars needed. Chorus from the boardwalk after dark; a red torch finds frogs, nothing else needed.

Where to go

How to go on your own, and what it costs

El Rocío: walk the Madre de las Marismas boardwalk from the village after dark — free. Dehesa de Abajo: the car park closes but the road verge by the lagoon is open. Odiel: the public road across the marshes from Huelva; the visitor centre has daytime hours.

Cost: Free.

Field-recording notes

Rainfall drives everything — after a wet February the temporary lagoons erupt; in drought years there is little. Spadefoots call from underwater: a hydrophone in a shallow pool is the way. All species are protected — no capture. Mosquitoes arrive with the water.

Sources

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More: all spectacles in Spain · frog and toad choruses · Spain in March · Spain in April · Spain in May