Measurements
Both Sexes
- Length
- 3.5–4.3 in
9–11 cm - Wingspan
- 6.3–7.1 in
16–18 cm - Weight
- 0.2–0.4 oz
5–10 g
Other Names
- Roitelet à couronne rubis (French)
- Reyezuelo de Rojo, Reyezuelo Monicolorado, Reyezuelo de Coronilla Colorado, Reyezuelo (Spanish)
Cool Facts
- The Ruby-crowned Kinglet is a tiny bird that lays a very large clutch of eggs. Although the eggs themselves weigh only 0.65 g (0.02 oz), an entire clutch can weigh as much as the female herself.
Habitat
Forest
Food
Insects
Small insects and their eggs.
Nesting
Nesting Facts
- Clutch Size
- 4–12 eggs
- Egg Description
- Drab white spotted with brown around large end.
Nest Description
Open cup of moss, feathers, lichen, spider web, bark, twigs, rootlegs, grasses, and conifer needles, lined with feathers, fine grasses, plant down, lichens, and fur. Hanging from, or on tree branch.
Nest Placement
Tree
Behavior
Foliage Gleaner
Gleans food from tips of branches and bark. Hovers and gleans from foliage.
Conservation
Least Concern
Common. May be declining in some areas.
Credits
- Ingold, J. L., and G. E. Wallace. 1994. Ruby-crowned Kinglet (Regulus calendula). In The Birds of North America, No. 119 (A. Poole and F. Gill, eds.). The Academy of Natural Sciences, Philadelphia, PA, and The American Ornithologists' Union, Washington, D.C.