Forest bittern vs Grey heron
The grey heron is heavier: 1.44 kg against 802 g for the forest bittern, about 80% more.

Photo: Norma Malinowski · CC BY 4.0 · Wikimedia Commons

Photo: Bengt Nyman from Vaxholm, Sweden · CC BY 2.0 · Wikimedia Commons
What is the difference between a forest bittern and a grey heron?
Each point below is worked out from a pair of recorded values.
- The grey heron is heavier: 1.44 kg against 802 g for the forest bittern, about 80% more.
- They share the family Ardeidae but sit in different genera: Forest bittern in Zonerodius, Grey heron in Ardea.
- The forest bittern is listed as Near Threatened on the IUCN Red List; the grey heron is Least Concern.
Side by side
| Forest bittern | Grey heron | |
|---|---|---|
| Scientific name | Zonerodius heliosylus | Ardea cinerea |
| Family | Ardeidae | Ardeidae |
| Order | Pelecaniformes | Pelecaniformes |
| Weight | 802 g | 1.36 kg – 1.51 kg |
| Length | Not recorded | Not recorded |
| Lifespan | Not recorded | 30.3 years |
| Main food | Not recorded | Not recorded |
| Habitat | riverine | wetland |
| Conservation status | Near Threatened | Least Concern |
| 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: Forest bitternFull record: Grey heronCompare other animals