| 词条 | Doubleday's hummingbird |
| 释义 |
| image = Doubleday Hummingbird - Mexico S4E8781.jpg | status = LC | status_system = IUCN3.1 | status_ref =[1] | genus = Cynanthus | species = doubledayi | authority = Bourcier, 1847}} Doubleday's hummingbird (Cynanthus doubledayi) is a species of hummingbird in the family Trochilidae also known as the turquoise-crowned hummingbird. Some taxonomic authorities, such as the American Ornithological Society consider this bird to be a subspecies of the broad-billed hummingbird, while others consider it distinct. Geographic RangeCynanthus doubledayi is found along the Pacific coast of south-west Mexico.[2]DietHummingbirds in generally eat;[3]
Insects provide critical nutrients like fat, protein and salts that nectar does not provide.
Sap is consumed when nectar is unavailable and contains enough scructose to sustain the hummingbird’s energy use.
Although pollen is not directly consumed an amount of pollen is stuck to the Hummingbird’s beak thus being ingested, only about 10% of ingested pollen is actually digested and provides a small amount of protein. References1. ^{{IUCN | id = 22725775| taxon = Cynanthus doubledayi| assessor = Birdlife International| assessment_year = 2014| version = 2014.3| accessdate = 12 January 2015}} {{Taxonbar|from=Q2982553}}{{DEFAULTSORT:hummingbird, Doubleday's}}{{hummingbird-stub}}2. ^{{cite web|url=http://maps.iucnredlist.org/map.html?id=22725775|title=Cynanthus doubledayi range map|publisher=International Union for Conservation of Nature and Natural Resources|access-date=2015-01-01}} 3. ^{{Cite journal|last=Peaker|first=M.|date=1990-01-01|title=Nutritional requirements and diets for hummingbirds and sunbirds|journal=International Zoo Yearbook|language=en|volume=29|issue=1|pages=109–118|doi=10.1111/j.1748-1090.1990.tb03339.x|issn=1748-1090}} 5 : Cynanthus|Birds of Mexico|Native birds of Southern Mexico|Endemic birds of Mexico|Birds described in 1847 |
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