Thousands of Flamingos Grace the Beaches of Sisal in Pink ‘Flamboyance’
Over the past couple of weeks, the coastal town of Sisal in northern Yucatán has become the stage for one of Yucatán’s most impressive natural spectacles.
Flocks of thousands of flamingos (known scientifically as a flamboyance) have been spotted flying over packed beaches, transforming tranquil Sisal into a spectacle of pink and crimson.
While these iconic birds are usually found tucked within the protective mangroves and remote estuaries of the region, they have been treating beachgoers to a rare display: wave after wave flying over the open ocean, and sometimes passing directly overhead.
These recent sightings are particularly extraordinary due to the proximity and behavior of the birds. Unlike the distant views often associated with eco-tours, visitors in Sisal have witnessed the flamingos moving en masse.
Large groups of flamingoes often look like a disorganized swarm, but in reality, they are flying in formations of 5 to 12 individuals; it is just that when in large numbers, this becomes hard to discern. Photo: Carlos Rosado van der Gracht / Yucatán Magazine
Flamingo beaks are specialized, L-shaped, downturned structures designed for upside-down filter feeding. They feature comb-like plates called lamellae that strain small prey—like brine shrimp and algae—from water, acting similarly to a whale’s baleen.Photo: Carlos Rosado van der Gracht / Yucatán Magazine
Flamingos keep formations in the sky for security, but mostly for aerodynamics.Photo: Carlos Rosado van der Gracht / Yucatán Magazine
Close-up of an adolescent flamingo’s pinkish plumage, which, if everything goes well, will become brighter with age.Photo: Carlos Rosado van der Gracht / Yucatán Magazine
Flamingos in Sisal fly close to the surface of the water to avoid the worst of the afternoon winds.Photo: Carlos Rosado van der Gracht / Yucatán Magazine
Flamingo behaviour
The massive flocks have been seen splitting into organized waves of five to seven distinct groups, each passing approximately five to ten minutes apart. For many, the experience is unforgettable. “That is unlike anything I have ever seen,” said Mario Quijano of Michoacan, watching from Sisal’s pier. “I had thought about taking a tour to see the flamingos, but I doubt it can get any better than this.”
Observers have noted that the plumage of these birds is a particularly vibrant, bright pink—a definitive sign of a healthy, well-fed flock. This coloration comes from carotenoid pigments found in the algae and brine shrimp they consume. The striking pink hue indicates that this group is composed mostly of mature adults; younger flamingos typically retain a more opaque, greyish coloring until their diet transforms their feathers.
The behavior on display in Sisal is a perfect real-world example of how flamingo flocks function as a dynamic super-organism. Flamingos are nomadic by nature, thriving in hypersaline environments where food sources can literally move with the seasons and tides.
Their movements are dictated by a “boom and bust” cycle; they may stay in one lagoon for months, but when they need to relocate—whether due to shifting salinity, food depletion, or the urge to breed—they move with remarkable coordination.
Currently, the region is in the midst of mating season, which runs from March to September. During this period, flamingos are prone to moving en masse daily to different feeding and breeding grounds. The foundation of this flock behavior is safety in numbers. A group of hundreds or thousands acts as a collective surveillance system; while some birds feed by stirring up prey with their uniquely shaped bills, others remain alert to threats.
On the ground, they perform ritualized head-flagging, wing-saluting, and twist-preening. This isn’t random; it is a means of synchronizing hormonal cycles. By acting in unison, the entire colony ensures they breed at the same time, overwhelming potential predators and maximizing chick survival.
When moving between locations like the mangroves and the open beaches of Sisal, smaller groups tend to form loose “V” formations or fluid, undulating lines. But when these flocks number several hundreds, they resemble more of an unorganized swarm. However, this is an illusion of sorts, as in reality, they continue to fly packed into groups (or flamboyances) following standard formation, though given their numbers, this is difficult to discern.
The Remarkable Beak and Neck of the Flamingo
The flamingo is defined by two extraordinary features: its uniquely adapted beak and its impossibly long neck, which work in perfect harmony to sustain its specialized lifestyle.
The beak is an engineering marvel. Unlike any other bird, the flamingo feeds with its head inverted. The lower bill is thick and stationary, while the upper bill moves freely—a complete reversal of the typical avian anatomy. Inside, rows of lamellae, or hair-like structures, act as a sophisticated filtering system. As the fleshy tongue pumps water in and out, these lamellae trap algae, brine shrimp, and tiny organisms while expelling mud and excess liquid.
Complementing this mechanism is the flamingo’s neck, which consists of 19 elongated vertebrae—more than most birds. This remarkable flexibility allows the neck to curve and twist, enabling the bird to submerge its head at odd angles while keeping its body upright in deep water. Together, the curved neck positions the inverted beak precisely where food is most abundant, creating one of nature’s most efficient foraging systems.
Senior Editor Carlos Rosado van der Gracht, PhD, is a journalist, photographer, and expedition leader. Born in Mérida, Carlos holds degrees from universities in Mexico, Canada, and Norway. Most recently, he earned a doctorate in Heritage Studies in 2026.
