CreatureData

Cabot's tern vs Royal tern

The royal tern is heavier: 415.3 g against 237 g for the cabot's tern, about 75% more.

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Cabot's tern
Royal tern (Thalasseus maximus)
Royal tern LCLeast Concern
Photo: EyeLoveBirds from Vancouver, Canada · CC BY-SA 2.0 · Wikimedia Commons

What is the difference between a cabot's tern and a royal tern?

Each point below is worked out from a pair of recorded values.

  • The royal tern is heavier: 415.3 g against 237 g for the cabot's tern, about 75% more.
  • The cabot's tern is longer-lived: 27.2 years against 24.6 years for the royal tern, about 10% longer.
  • Both belong to the genus Thalasseus, so they are close relatives.

Side by side

Cabot's ternRoyal tern
Scientific nameThalasseus acuflavidusThalasseus maximus
FamilyLaridaeLaridae
OrderCharadriiformesCharadriiformes
Weight208 g – 296 g385 g – 464 g
LengthNot recordedNot recorded
Lifespan27.2 years24.6 years
Main foodNot recordedNot recorded
HabitatNot recordedmarine
Conservation statusNot recordedLeast Concern
Countries recordedNot recordedNot recorded

A scale drawing needs a recorded length for both animals; only weights are on record for this pair.

Full record: Cabot's ternFull record: Royal ternCompare other animals