Ruby-crowned Kinglet (Corthylio calendula)

OTHER NAMES: N/A
Latin Etymology: Corthylio (small wren-like bird mentioned by Hesychius) calendula ("dim")

Adult female Ruby-crowned Kinglet (subspecies C. c. grinelli) at Roy's Redwoods, California - September 2022

Featured Subspecies: probably Corthylio calendula grinelli
Weight: 5-20g  /  Length: 9-11cm  /  Wingspan: 16-18cm
NO UK STATUS / IUCN Red List: Least Concern

Given "kinglet" is the name of the family, the Ruby-crowned Kinglet is actually the only member of the family to have that word in it's name. As the name suggests, it has a uniquely bright red crest, although this is only present in the males, with the females like this one being a drab dull green bird. 

Related Species:
Order: Passeriformes
Family: Regulidae
Genus: Corthylio
SUBSPECIES: C. c. grinnelli, C. c. calendula, C. c. obscurus

 - Sighting Locations -

UNITED STATES
Breeds in the Alaska and the Rockies, Wnters in much of the rest of Lower 48
 - CALIFORNIA 2022 TRIP: Seen at Roy's Redwoods

Further Notes: BirdForum Opus, IUCN Red List, RSPB, Wikipedia, Xeno-canto

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Goldcrest (Regulus regulus)

OTHER NAMES: Woodcock Pilot, Thumb bird, Golden Cutty
Latin Etymology: Regulus ("Kinglet/Prince") regulus ("Kinglet/Prince")

Adult Goldcrest (subspecies R. r. regulus) in Geddington, Northants - October 2010

Featured Subspecies: Regulus regulus regulus
Weight: 6.5g  /  Length: 8.5-9.5cm  /  Wingspan: 12.5-15.5cm

UK GREEN LIST / IUCN Red List - Least Concern

An attractive little bird, the goldcrest's main claim to fame is that it's the smallest bird in Europe. This brings with it some problems in photographing them - they are small, flit in and out of cover and manually focusing cameras don't like picking them up unless you have them in a clear field of view. They are however very widely spread, and numerous if you know where to look and it seems they can be found anywhere with a passable number of trees - particularly conifers. Parks with established trees are probably the best bet.

Related Species: 
Order: Passeriformes
Family: Regulidae
Genus: Regulus
Subspecies: R. r. regulus, R. r. azoricus, R. r. sanctaemariae, R. r. inermis, R. r. teneriffae, R. r. ellenthalerae, R. r. buturlini, R. r. hyrcanus, R. r. coatsi, R. r. tristis, R. r. himalayensis, R. r. sikkimensis, R. r. japonensis, R. r. yunnanensis   

- Sighting Locations -

UNITED KINGDOM - Fairly common breeding species (610,000 territories) and common Winter Visitor (3-5 million birds)

 - Most birds seen in Geddington though odd birds elsewhere..         

Further Notes: BirdForum Opus, IUCN Red List, RSPB, Wikipedia, Xeno-canto

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