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While all hummingbirds depend on flower nectar to fuel their high metabolisms and hovering flight, coordinated changes in flower and bill shape stimulated the formation of new species of hummingbirds and plants. Due to this exceptional evolutionary pattern, as many as 140 hummingbird species can coexist in a specific region, such as the Andes ...
Anna's hummingbird. Anna's hummingbird (Calypte anna) is a North American species of hummingbird. It was named after Anna Masséna, Duchess of Rivoli. It is native to western coastal regions of North America. In the early 20th century, Anna's hummingbirds bred only in northern Baja California and Southern California.
The Mexican violetear is roughly medium-sized by hummingbird standards. It averages around 9.7 to 12 cm (3.8 to 4.7 in) in total length. Its bill is black and mostly straight with only a slight downward curve and measures from 1.8 to 2.5 cm (0.71 to 0.98 in). [3] The body mass can vary from 4.8 to 5.6 g (0.17 to 0.20 oz).
Allen's hummingbird is a small bird, with mature adults reaching only 3 to 3.5 in (76 to 89 mm) in length and weighing approximately 2 to 4 grams in weight. [3] They are known for their vibrant colors and energetic behaviors, making them a popular subject for birdwatchers and nature enthusiasts. The male has a green back and forehead, with rust ...
Trochilus colubris Linnaeus, 1758. The ruby-throated hummingbird (Archilochus colubris) is a species of hummingbird that generally spends the winter in Central America, Mexico, and Florida, and migrates to Canada and other parts of Eastern North America for the summer to breed. It is the most common hummingbird in eastern North America, having ...
Description. This species is small, as a mature adult grows to only 3–3.5 in (7.6–8.9 cm) in length, with a wingspan of 11 cm, [10] and an average weight of 3.05 g for males and 3.22 g for females. [3][11] The male has a mainly green back and flanks, a small black tail and wings, and patches of white below their gorgeted throat and tail.
The white-throated hummingbird is 10 to 11.5 cm (3.9 to 4.5 in) long. Males weigh 5 to 8 g (0.18 to 0.28 oz) and females about 4.5 g (0.16 oz). Adults have a medium length, straight, bill with a blackish maxilla and red mandible with a black tip. Adult males have golden- to bronze-green upperparts.
The specific epithet polytmus is from the Ancient Greek polutimos meaning "costly" or "valuable". [ 9 ] The International Ornithological Committee (IOC), BirdLife International 's Handbook of the Birds of the World , and the Clements taxonomy treat the red-billed streamertail and black-billed streamertail ( T. scitulus ) as separate species.