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Vision is presumed to be the main detection sense; no evidence exists to support the use of echolocation. The birds have been observed to converge on artificial light sources in an effort to forage for insects enticed by the light. [4] The average flight speed of common nighthawks is 23.4 km/h (14.5 mph). [18]
Raptors may have to pursue mobile prey in the lower part of their visual field, and therefore do not have the lower field myopia adaptation demonstrated by many other birds. [1] Scavenging birds like vultures do not need such sharp vision, so a condor has only a single fovea with about 35,000 receptors mm 2. Vultures, however have high ...
The American goldfinch is the state bird of Iowa. This list of birds of Iowa includes species documented in the U.S. state of Iowa and accepted by the Iowa Ornithologists' Union (IOU). As of January 2023, there are 433 species included in the official list. [1]
Hawk encounters remind us to activate our inner vision to see what we might normally miss. View the original article to see embedded media. Types of Hawks and Their Symbolism
There are many birds that are active nocturnally. Some, like owls and nighthawks, are predominantly nocturnal whereas others do specific tasks, like migrating, nocturnally. North Island brown kiwi, Apteryx mantelli [1] Black-crowned night heron, Nycticorax nycticorax [1] Short-eared owl, Asio flammeus [1] Long-eared owl, Asio otus [1]
The subfamily Chordeilinae contains four genera and ten species. [4] Under the genus Chordeiles exists the greatest number of diversity in species in the subfamily with the lesser nighthawk (Chordeiles acutipennis), the Antillean nighthawk (Chordeiles gundlachii), the common nighthawk (Chordeiles minor), the nacunda nighthawk (Chordeiles nacunda), the least nighthawk (Chordeiles pusillus), and ...
The selection of state birds began with Kentucky adopting the northern cardinal in 1926. It continued when the legislatures for Alabama, Florida, Maine, Missouri, Oregon, Texas and Wyoming selected their state birds after a campaign was started by the General Federation of Women's Clubs to name official state birds in the 1920s.
Curtis Jones scored 20 points, Keshon Gilbert added 14 points and No. 3 Iowa State held on for a 79-69 win over Colorado on Monday night in Boulder, Colo., in the Big 12 opener for both teams ...