Baby Pink Flamingos Ready to Hatch at Ría Lagartos Reserve

In early May, aerial surveys recorded 14,757 nests built by pink flamingos in the Angostura zone of Mexico’s Ría Lagartos Biosphere Reserve, according to the National Commission of Protected Natural Areas (CONANP). The count, conducted using drone photography, revealed a 40 percent hatch rate, with the remaining eggs expected to hatch within days, Telesur reported.

The numbers represent an improvement over previous counts in that area of the reserve, the commission reports.

The survey also confirmed a Florida-Yucatán migration pattern. Among the thousands of birds surveyed this year, researchers identified a flamingo bearing the US02 ring, tagged initially in Florida. The sighting underscores the species’ extensive migratory patterns across the Gulf of Mexico and Caribbean region.

The American flamingo population in Yucatán faces mounting pressures from development, pollution, and climate change, yet long-term breeding data suggest conservation efforts continue to yield results. The peninsula’s flamingo population has recovered from a low of 5,000 birds in 1956 to an estimated 40,000 today.

Pink flamingos’ patterns

Flamingos follow predictable seasonal patterns across Yucatán. Large flocks concentrate in the Celestún Biosphere Reserve on the western coast from December to March, using the shallow lagoons as feeding grounds. In spring, they migrate nearly 300 kilometers eastward to Ría Lagartos, establishing breeding colonies in remote salt flats near El Cuyo.

New behavioral patterns have also been detected, with flamingo populations expanding to unexpected locations. That summer, flocks established a new colony near the port city of Progreso, drawn by fresh food sources in mangroves just 20 meters from the main road. The development marked the first time flamingos had been regularly observed in that location, demonstrating the species’ adaptability to changing environmental conditions.

The birds construct cone-shaped mud nests elevated above ground level to prevent flooding during the rainy season. Both parents share incubation duties for 27 to 31 days, typically producing one egg per breeding cycle. Chicks emerge gray and develop their characteristic pink coloration over months as they consume carotenoid-rich brine shrimp and algae.

Conservation organizations report multiple threats to pink flamingos. Illegal deforestation, agricultural runoff, industrial pollution, and urban development have degraded critical wetland habitats. Feral dogs and cats pose additional predation risks to nesting colonies.

More tourists, fewer birds

Tourism presents a particularly complex challenge. While ecotourism generates revenue for local communities, irresponsible visitors can disrupt breeding activities. Biologist Gabriel Hoil noted that tourist numbers at Ría Lagartos increased significantly after pandemic restrictions lifted, coinciding with a sharp decline in nesting pink flamingos from 30,000 in 2021 to fewer than 2,000 in 2022.

“Many photographers don’t respect the flamingos and invade their spaces looking for the perfect image,” said Nelly Quijano, a conservation photographer working with local organizations. Tour operators now enforce minimum viewing distances of 500 meters from nesting areas.

The comparison between 2019 and 2024 nesting numbers highlights the species’ vulnerability to environmental disruptions. The 2019 record of 21,960 nests occurred during relative stability, before the tourism surge that followed the COVID-19 pandemic. The subsequent decline to 14,757 nests suggests increased human activity may affect breeding success rates.

The birds serve as environmental indicators for the region’s coastal ecosystems. Healthy flamingo populations signal well-functioning mangrove forests, salt flats, and lagoons that support numerous other species. The mangroves provide nursery habitat for fish, mollusks, and crustaceans while housing over 395 bird species, crocodiles, and jaguars.

Related: The Zen of Photographing Pink Flamingos

Flamingos typically inhabit areas near Uaymitún, Isla Holbox, and Río Lagartos, but their expansion to new territories like Progreso demonstrates their ongoing search for suitable habitat. “As recognizable as they are, we don’t know much about them,” says Chris Brown, curator of birds at the Dallas Zoo and Children’s Aquarium, who studies the flamingos on the Yucatán Peninsula.

Local communities have increasingly embraced conservation efforts. Fernanda Linage, founder of the NGO Flamingo Conservation, works with coastal residents on environmental education programs. “There was a time when the communities had forgotten to treat the wetlands with respect,” she said, “but thanks to environmental education and by rekindling their bonds to nature, sustainability has once again become a big part of the local communities’ lifestyle.”

Government agencies coordinate monitoring efforts across multiple protected areas, including reserves at Río Lagartos, Celestún, Los Petenes, and the Flora and Fauna Protection Area of Yum Balam. Since 1999, researchers have documented the birth of 154,446 flamingo chicks in the region’s reserves, with 7,142 individuals tagged for scientific tracking. The Celestún reserve reported 162 nests during the current breeding season.

Climate threats

Climate change poses long-term risks to pink flamingos’ habitat. Rising sea levels and altered rainfall patterns could disrupt the delicate salinity balance required for brine shrimp populations. Researchers have observed changes in breeding timing and location selection as birds adapt to shifting environmental conditions, including drought, hurricanes, and fluctuating water levels due to coastal development.

The flamingo’s status as a threatened species under Mexican law has prompted enhanced protection measures. Conservation groups conduct habitat restoration, monitor breeding colonies, and rescue abandoned chicks. The Pedro and Elena Hernández Foundation has coordinated monitoring efforts since 2002.

Despite conservation successes, officials emphasize ongoing challenges. Limited government funding, inadequate enforcement of environmental regulations, and pressure from development projects continue to threaten flamingo habitat. The birds’ low reproductive rate—one egg per year—makes populations particularly vulnerable to disruption.

The decline from 2019’s record nesting numbers to 2024’s count represents a conservation challenge and an opportunity for renewed protection efforts. While the recent survey demonstrates the species’ continued presence in Yucatán, the reduction underscores the need for sustained habitat protection and responsible tourism practices across the peninsula’s fragile coastal ecosystems.