Fairy tern vs Peruvian tern
The fairy tern is heavier: 72.3 g against 53.8 g for the peruvian tern, about 34% more.

Photo: JJ Harrison ( https://www.jjharrison.com.au/ ) · CC BY-SA 3.0 · Wikimedia Commons

Photo: David F. Belmonte · CC BY 4.0 · Wikimedia Commons
What is the difference between a fairy tern and a peruvian tern?
Each point below is worked out from a pair of recorded values.
- The fairy tern is heavier: 72.3 g against 53.8 g for the peruvian tern, about 34% more.
- Both belong to the genus Sternula, so they are close relatives.
- The fairy tern is listed as Vulnerable on the IUCN Red List; the peruvian tern is Endangered.
Side by side
| Fairy tern | Peruvian tern | |
|---|---|---|
| Scientific name | Sternula nereis | Sternula lorata |
| Family | Laridae | Laridae |
| Order | Charadriiformes | Charadriiformes |
| Weight | 72.2 g – 72.4 g | 53.8 g |
| Length | Not recorded | Not recorded |
| Lifespan | 17.3 years | Not recorded |
| Main food | Not recorded | Not recorded |
| Habitat | coastal | coastal |
| Conservation status | Vulnerable | Endangered |
| Countries recorded | 1 | Not recorded |
A scale drawing needs a recorded length for both animals; only weights are on record for this pair.
Full record: Fairy ternFull record: Peruvian ternCompare other animals