Royal Tern
- Family
- Laridae
- Conservation status (IUCN)
- Least Concern 5
Where and when to see the Royal Tern
DraftOn the Yucatán Peninsula
It is a bird of beaches, piers, bays and coastal lagoons all around the peninsula, rarely far from salt water. Look for its orange bill among the gulls and terns resting on sandbars.
Where it’s reported most
- Punta EsmeraldaPlaya del Carmen, Quintana Roo
- CelestúnCelestún, Yucatán
- Chuburná PuertoProgreso, Yucatán
- HolboxLázaro Cárdenas, Quintana Roo
When
All year
Reported all year.
Reports relative to effort
- January: 87%
- February: 85%
- March: 82%
- April: 59%
- May: 52%
- June: 51%
- July: 56%
- August: 63%
- September: 70%
- October: 72%
- November: 90%
- December: 100%
Data: eBird and other datasets via GBIF.org (CC BY 4.0), 2015–2026 · Base map: Natural Earth
Patrols beaches and lagoon mouths, plunge-diving for fish, and rests in groups on sandbars and piers. One of the most familiar terns along the Caribbean coast.
- Identification
- A large tern with a thick, carrot-orange bill, a shaggy black crest and a pale grey back. The forehead is white for most of the year and turns black only for part of the breeding season.
- Voice
- A loud, rolling “keer-reet”, higher than the Caspian Tern’s.
What the photo doesn’t show
DraftA beach nursery
Soon after hatching, the chicks gather in a crèche, a group nursery that in big colonies holds thousands. Parents still find and feed only their own chick, recognising it by its voice. 1,2
A long childhood
The young stay with their parents for eight months or more and fly south with them. Most do not breed until they are about four years old. 1,3
Even Audubon got it wrong
Even John James Audubon confused it with the Caspian Tern all his life. The “Cayenne Tern” in his Birds of America is mostly a Royal Tern with some Caspian features. 3
More terns on Alacranes
It nests on Arrecife Alacranes, off Yucatán, beside Cabot’s Terns. A census there found about three times as many Royal Terns as in 1986, a rise the researchers link to the reef’s protection as a national park in 1994. 4
Sources
- Audubon Guide to North American Birds: Royal Tern (opens in a new tab)
- Wikipedia: Royal tern (opens in a new tab)
- Birds of the World (Cornell Lab): Royal Tern (opens in a new tab)
- Morales-Vera et al. 2017, Marine Ornithology 45: 175–185 (opens in a new tab)
- IUCN Red List category, via GBIF: Thalasseus maximus (opens in a new tab)
Map and months: 14,524 records from 2015–2026 from eBird, iNaturalist, and others, via GBIF.org (CC BY 4.0), in 0.1° squares (about 10 km). eBird: doi.org/10.15468/aomfnb.
Months: the species’ records ÷ all bird records that month, scaled to the busiest month. It allows for birding effort; it is not the chance of seeing it. A blank square: few or no reports, not necessarily absent.
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