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  2. Genomic evolution of birds - Wikipedia

    en.wikipedia.org/wiki/Genomic_evolution_of_birds

    The black-chinned hummingbird (Archilochus alexandri) is the bird species known to have the smallest genome among birds, which is only 0.91 Gb long.The genomic evolution of birds has come under scrutiny since the advent of rapid DNA sequencing, as birds have the smallest genomes of the amniotes despite acquiring highly derived phenotypic traits.

  3. List of bird genera - Wikipedia

    en.wikipedia.org/wiki/List_of_bird_genera

    List of bird genera concerns the chordata class of aves or birds, characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, ...

  4. Evolution of birds - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_birds

    The evolution of birds began in the Jurassic Period, with the earliest birds derived from a clade of theropod dinosaurs named Paraves. [1] Birds are categorized as a biological class, Aves. For more than a century, the small theropod dinosaur Archaeopteryx lithographica from the Late Jurassic period was considered to have been the earliest bird.

  5. List of birds by common name - Wikipedia

    en.wikipedia.org/wiki/List_of_birds_by_common_name

    In this list of birds by common name 11,278 extant and recently extinct (since 1500) bird species are recognised. [1] Species marked with a "†" are extinct. Contents

  6. ZW sex-determination system - Wikipedia

    en.wikipedia.org/wiki/ZW_sex-determination_system

    The ZW sex-determination system is a chromosomal system that determines the sex of offspring in birds, some fish and crustaceans such as the giant river prawn, some insects (including butterflies and moths), the schistosome family of flatworms, and some reptiles, e.g. majority of snakes, lacertid lizards and monitors, including Komodo dragons.

  7. Ornithology - Wikipedia

    en.wikipedia.org/wiki/Ornithology

    Ornithology is a branch of zoology that concerns the study of birds. [1] Several aspects of ornithology differ from related disciplines, due partly to the high visibility and the aesthetic appeal of birds. [2] It has also been an area with a large contribution made by amateurs in terms of time, resources, and financial support.

  8. Are Cusp Signs Real? What It Means if You Were Born on ... - AOL

    www.aol.com/cusp-signs-real-means-were-210000892...

    As a result, the date the sun moves from one sign to another changes annually. This means that if you were born on July 20, you might be a Gemini or a Cancer, but not both, depending on the year ...

  9. Red-winged blackbird - Wikipedia

    en.wikipedia.org/wiki/Red-winged_blackbird

    The red-winged blackbird (Agelaius phoeniceus) is a passerine bird of the family Icteridae found in most of North America and much of Central America. It breeds from Alaska and Newfoundland south to Florida, the Gulf of Mexico, Mexico, and Guatemala, with isolated populations in western El Salvador, northwestern Honduras, and northwestern Costa Rica.