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Akanda and the Mondah bay flats: Gabon's wader wintering ground on Libreville's doorstep

Whimbrel with its long curved bill on the shore
Whimbrel. Photo: Charles J. Sharp, CC BY-SA 4.0

Palearctic waders — little stint, curlew sandpiper, grey plover, whimbrel, bar-tailed godwit, sanderling — with royal and Caspian terns, African skimmer, grey-headed gulls; Loango weaver in the mangrove edge; red-capped mangabey in the mangroves. Akanda National Park, Mondah and Corisco bays, Estuaire, Gabon.

Best time: 1 Nov – 15 Mar (November to March). Where: Moka river mouth – high-tide roost sandbank, Cap Estérias – beach and rocky point, Akanda / Baie de la Mondah shore – Libreville's northern suburbs (Gabon). Time of day: Two hours either side of high tide, when the flocks are pushed off the flats onto the sandbank roost at the Moka river mouth.

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

When is the best time?

Peak: 1 Nov – 15 Mar. November to mid March: the wintering flocks are complete — surveys put 34,000–40,000 Palearctic waders on the Corisco and Mondah bay mudflats, the largest concentration in Gabon — with passage pulses in October and late March

Active from 15 Sep to 15 Apr (September to April) in a typical year.

Time of day

Two hours either side of high tide, when the flocks are pushed off the flats onto the sandbank roost at the Moka river mouth; the falling tide at dawn spreads them back across the mud

Depends on the tide: best around high tide. Check local tide tables.

What will you hear?

The massed calls of stints and sandpipers lifting off the flats as the tide comes in, whimbrel and godwit over the mangroves, tern colonies shrieking on the sandbank; behind it the drip and click of the mangrove at low water and mangabeys crashing in the Rhizophora.

Binoculars?

Telescope recommended. Flocks on open mud and a sandbank 200–800 m away — a telescope from the beach, binoculars from the pirogue.

Where to go

How to go on your own, and what it costs

Cap Estérias is a public beach at the end of the tarmac from Libreville (taxi, about 45 minutes): free wader and tern watching on the beach and rocks at low tide. The roost at the Moka mouth is inside the park: hire a pirogue at Cap Estérias or the Akanda landing stages and pay the ANPN park fee; no guide rule for the beach, a boatman is the guide on the water.

Cost: Beach free; pirogue hire by the half-day negotiable (a few tens of euros), ANPN park entry — check current prices.

Free or no-guide alternative: Low tide at Cap Estérias beach: stints, sanderling, whimbrel and grey plover on the sand and rock pools, terns fishing offshore, no boat, no fee.

Field-recording notes

A pirogue at high tide is the way to the roost: engine off and drift onto the sandbank from downwind, never land on it in the tern season. The park is 25 minutes from Libreville's airport, so aircraft noise is a constant; the mangrove channels further north around the Moka mouth are quieter. Tide and daylight rarely coincide ideally — plan for a dawn high tide in the second half of the month. The KBA sheet lists urban pressure, illegal fishing and turtle poaching as the threats; expect fishing camps in the mangroves. Oil-exploration seismic surveys have been run offshore.

Sources

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More: all spectacles in Gabon · bird migration hotspots · Gabon in January · February · March · November · Gabon in December