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Bird species admitted to the British List are those in BOU categories A, B or C: A: species that have been recorded in an apparently natural state at least once since 1 January 1950. B: species that were recorded in an apparently natural state at least once between 1 January 1800 and 31 December 1949, but have not been recorded subsequently.
This is a list of the bird species recorded in England.The avifauna of England include a total of 625 species, of which 14 have been introduced by humans.. This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of British Ornithologists' Union (BOU).
This is a list of national birds, including official birds of overseas territories and other states described as nations. Most species in the list are officially designated. Some species hold only an "unofficial" status. The Official status column is marked as Yes only if the bird currently holds the position of the official national bird.
The avian family Icteridae is variously called icterids, troupials and allies, or oropendolas, orioles, blackbirds by taxonomic authorities. The family comprise the New World blackbirds, New World orioles, grackles, cowbirds, oropendolas, and several smaller groups.
In the UK, only three nests of 59,770 examined (0.005%) contained cuckoo eggs. [45] The introduced merula blackbird in New Zealand, where the cuckoo does not occur, has, over the past 130 years, lost the ability to recognize the adult common cuckoo but still rejects non-mimetic eggs. [46] As with other passerine birds, parasites are common.
Icterids (/ ˈ ɪ k t ər ɪ d /) or New World blackbirds make up a family, the Icteridae (/ ɪ k ˈ t ɛr ɪ d i /), of small to medium-sized, often colorful, New World passerine birds. The family contains 108 species and is divided into 30 genera.
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The Helm Identification Guides are a series of books that identify groups of birds.The series include two types of guides, those that are: Taxonomic, dealing with a particular family of birds on a worldwide scale—most early Helm Guides were this type, as well as many more-recent ones, although some later books deal with identification of such groups on a regional scale only (e.g., The Gulls ...