Flamingo Watching at Sewri: Mumbai's Seasonal Pink Spectacle

For a few months each winter, the drab grey mudflats east of Sewri do something quietly extraordinary: they turn pink. Tens of thousands of flamingos — most of them lesser flamingos, smaller and more vividly rose-coloured than their greater cousins — drop down onto the tidal flats of the eastern seaboard to feed on the algae and tiny crustaceans that give their feathers that colour. They arrive with the cool weather, spread out from the Sewri–Mahul flats across Thane Creek towards Airoli, and then lift off again before the monsoon. It is one of the strangest, most rewarding mornings out the city offers, and you can see it on a tank of petrol or a single train ticket. Here is how to do it properly.

When to go: the season and the tide

Two things decide whether you see a pink haze or an empty stretch of mud — the calendar and the tide. Get both right and it is hard to miss.

The season runs roughly from November to May. The birds trickle in from around October–November, having flown down largely from the Rann of Kutch in Gujarat and other breeding grounds, and the numbers build through the winter. The sweet spot most regulars swear by is late January through April, when flocks are at their fullest before the heat and the first rains push them out. By June the show is over.

The tide matters just as much, and this is where most first-timers come unstuck. Flamingos feed on the mudflats, so you need enough water to have concentrated the birds and enough exposed flat to see them on. The rule of thumb is to aim for a rising tide — a couple of hours either side of high tide. At Sewri specifically, locals talk about turning up around two hours after low tide: as the water creeps back in it pushes the birds off the far flats and towards the banks, and within a couple of hours they are gathered close in, in their thousands. At dead low tide they are specks on the horizon; at full high tide the flats vanish and so do they. So the single most useful thing you can do before setting out is check a Mumbai tide chart and time your arrival to a rising tide, ideally early. The first light between about 6am and 10am is kindest — cooler, softer for photographs, and the birds are active.

Where to see them

Sewri Jetty and the Sewri–Mahul mudflats (South Mumbai)

Area: Sewri, eastern South Mumbai, on the Harbour Line.

This is the classic, free, do-it-yourself spot and the one the whole phenomenon is named after. The mudflats stretch out below the old Sewri Fort and along towards Mahul, and in season they hold enormous numbers of birds. Getting there is easy: take the Harbour Line to Sewri station and a short auto or cab to the jetty. There is no ticket, no gate and no guide — you simply walk out towards the water and look.

A word on the elephant in the harbour, or rather the bridge over it. The Atal Setu (Mumbai Trans Harbour Link) — India’s longest sea bridge at nearly 22km — now launches out over the water from exactly here. During its construction years, sightings at Sewri became patchy and some tour operators quietly shifted their trips to Airoli. The good news is that the bridge is finished and open, and its Sewri end was built with a roughly 2km “silent zone” of noise and sight barriers specifically to shield the flamingo flats. The birds still come. That said, Sewri is now a working, changing waterfront, and on a given morning the flock may be further out than you would like.

Practical tip: Bring binoculars or a zoom lens — this is non-negotiable at Sewri. The birds are often too far for the naked eye to resolve as flamingos rather than a pale smudge. Carry water, a hat and some cash, wear shoes you do not mind getting muddy, and go with the tide, not against your convenience.

Thane Creek Flamingo Sanctuary — Coastal & Marine Biodiversity Centre, Airoli (Navi Mumbai)

Area: Airoli, Navi Mumbai, on the far side of Thane Creek.

If you want the birds up close and the morning organised for you, this is the better bet — and it is why many Mumbaikars now head here rather than to Sewri. The Coastal & Marine Biodiversity Centre (CMBC) at Airoli is run by the Mangrove Cell / Mangrove Foundation of the Maharashtra Forest Department, and it runs proper boat safaris out into the creek among the mangroves and the flocks. There is also an indoor exhibition on the ecosystem worth twenty minutes before or after.

• Season and timings: Safaris run in the flamingo months (roughly November to May), and the daily slots shift with the high tide — there are usually three rides a day. For the 2026 season, boat safaris began on 17 January 2026. The office runs about 10am–6pm; rides fall somewhere between 8am and 5pm depending on the water.
• Cost: Sanctuary entry is around ₹50 for adults and ₹25 for children. The boat ride is roughly ₹475 per person on weekdays and about ₹650 at weekends (figures vary a little year to year). Reckon on something like ₹1,000–1,400 for two all in.
• Booking: These slots fill up, so book ahead — a week is sensible. You can WhatsApp or call the centre on 9987673737 for the current monthly schedule and tide-linked timings.
• Getting there: The centre is at Sector 10, Diva Nagar Road, in the mangrove forest at Airoli, about 4–5km from Airoli railway station (take an auto). By road, cross the Airoli bridge off the Eastern Express Highway near the Bhandup pumping station.

Practical tip: Book for a weekday morning if you can — cheaper, quieter, and the light is better. Confirm the exact ride time the day before, because it moves with the tide.

Bhandup Pumping Station and the Thane Creek shoreline

Area: Bhandup, north-east Mumbai, along the western edge of Thane Creek.

For keen birders who like to walk, the wetlands around the Bhandup Pumping Station — the salt pans and creekside mangroves on the Mumbai side of the water — are a long-loved spot, not just for flamingos but for a huge cast of migratory waders, herons, egrets, sandpipers and the occasional raptor. It is rougher and less signposted than the other two, more a birdwatcher’s patch than a family outing, and worth doing with someone who knows the ground. The Bombay Natural History Society (BNHS) and other nature groups periodically run guided walks and flamingo outings across these creek habitats, which are a gentle way in if it is your first time.

What you will actually see

Two species share the flats. The lesser flamingo is the star of the Mumbai show — smaller, a deeper rose-pink, and present in the vast, restless rafts that make the water look tie-dyed. The taller, paler greater flamingo turns up too, in smaller numbers. Watch long enough and you will see them do the odd synchronised shuffle, heads down, filtering the shallows, before a patch of the flock ripples up into flight — black-tipped wings flashing against the pink — and resettles a little further along. Around them, if you have the patience and the binoculars, is a whole supporting cast of shorebirds.

FAQ

When is the best time of year for flamingos at Sewri? Roughly November to May, with late January to April the peak. Numbers build through the cool months and drop off before the monsoon.

What time of day should I go? Early morning, about 6–10am, timed to a rising tide — check a Mumbai tide chart. Broadly, aim for a couple of hours either side of high tide; at Sewri, roughly two hours after low tide the birds come in close.

Is Sewri Jetty still worth it after the Atal Setu bridge? Yes. Sightings dipped during construction, but the bridge is complete with a dedicated flamingo “silent zone” at the Sewri end, and the birds still gather on the flats. For a guaranteed close view, though, the Airoli boat safari is more reliable.

Do I need to book anything? Not for Sewri — it is free and open. For the Airoli (CMBC) boat safari you must book ahead; slots are tide-linked and limited, so call/WhatsApp 9987673737 about a week in advance.

How much does the Airoli boat safari cost? Roughly ₹475 per person on weekdays and ₹650 at weekends, plus a small entry fee (~₹50 adult, ~₹25 child). Around ₹1,000–1,400 for two.

What should I carry? Binoculars or a zoom lens above all, plus water, a hat and sunscreen, some cash, and shoes that can take mud. A tide chart on your phone is the quiet essential.

The bottom line

Flamingos are Mumbai’s most improbable wildlife spectacle — a Rann-of-Kutch migration that lands, of all places, on the industrial mudflats of the eastern shore. For a free, self-guided morning, take the Harbour Line to Sewri and go with the tide, binoculars in hand. For a closer, organised look, book a boat safari from the Airoli Coastal & Marine Biodiversity Centre a week ahead and pick a weekday. Either way, get the tide right, go early, and give it time. The mud does not look like much when you arrive — and then it turns pink.