Common firecrest vs Ruby-crowned kinglet
The ruby-crowned kinglet is heavier: 6.19 g against 5.6 g for the common firecrest, about 11% more.

Photo: Frank Vassen · CC BY 2.0 · Wikimedia Commons

Photo: Wildreturn · CC BY 2.0 · Wikimedia Commons
What is the difference between a common firecrest and a ruby-crowned kinglet?
Each point below is worked out from a pair of recorded values.
- The ruby-crowned kinglet is heavier: 6.19 g against 5.6 g for the common firecrest, about 11% more.
- They share the family Regulidae but sit in different genera: Common firecrest in Regulus, Ruby-crowned kinglet in Corthylio.
Side by side
| Common firecrest | Ruby-crowned kinglet | |
|---|---|---|
| Scientific name | Regulus ignicapilla | Corthylio calendula |
| Family | Regulidae | Regulidae |
| Order | Passeriformes | Passeriformes |
| Weight | 5.35 g – 5.8 g | 6.19 g – 6.7 g |
| Length | Not recorded | Not recorded |
| Lifespan | 5.6 years | 5.6 years |
| Main food | Not recorded | Not recorded |
| Habitat | forest | forest |
| Conservation status | Least Concern | Not recorded |
| 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: Common firecrestFull record: Ruby-crowned kingletCompare other animals