Big brown bat vs Botta's serotine
The big brown bat is heavier: 16.5 g against 14.2 g for the botta's serotine, about 16% more.

Photo: NPS · Public domain · Wikimedia Commons

Photo: Mustafa Sözen · CC BY 4.0 · Wikimedia Commons
What is the difference between a big brown bat and a botta's serotine?
Each point below is worked out from a pair of recorded values.
- The big brown bat is heavier: 16.5 g against 14.2 g for the botta's serotine, about 16% more.
- The big brown bat is longer-lived: 19 years against 12 years for the botta's serotine, about 58% longer.
- Both belong to the genus Eptesicus, so they are close relatives.
- Both are listed as Least Concern on the IUCN Red List.
Side by side
| Big brown bat | Botta's serotine | |
|---|---|---|
| Scientific name | Eptesicus fuscus | Eptesicus bottae |
| Family | Vespertilionidae | Vespertilionidae |
| Order | Chiroptera | Chiroptera |
| Weight | 16.5 g – 17.2 g | 14.2 g – 15.7 g |
| Length | Not recorded | Not recorded |
| Lifespan | 19 years | 12 years |
| Main food | Not recorded | Not recorded |
| Habitat | Not recorded | Not recorded |
| Conservation status | Least Concern | Least Concern |
| Countries recorded | Not recorded | Not recorded |
A scale drawing needs a recorded length for both animals; only weights are on record for this pair.
Full record: Big brown batFull record: Botta's serotineCompare other animals