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The northern oriole (Icterus galbula), considered a species of North American bird from 1973 to 1995, brought together the eastern Baltimore oriole, Icterus galbula, and the western Bullock's oriole, Icterus bullockii. Observations of interbreeding between the Baltimore and the Bullock's oriole led to this classification as a single species.
Bullock's oriole (Icterus bullockii) is a small New World blackbird. At one time, this species and the Baltimore oriole were considered to be a single species, the northern oriole . This bird is named after William Bullock , an English amateur naturalist .
The male Baltimore oriole song is a clear whistle with a vibrant tone that flows and includes a brief sequence of notes that are paired and repeated 2-7 times, lasting 1-2 seconds. Sometimes during breeding season mature male orioles will make a " flutter-drum sound" to each other while in flight by making noise as they move their wings.
Female Representation in Music Sees ‘Little Change,’ but Number of Men Is Declining: Annenberg Inclusion Report
Black-vented oriole, Icterus wagleri (A) Orchard oriole, Icterus spurius; Hooded oriole, Icterus cucullatus (n) Eastern (cucullatus) group (A) Streak-backed oriole, Icterus pustulatus (n) Bullock's oriole, Icterus bullockii (n) Baltimore oriole, Icterus galbula; Scott's oriole, Icterus parisorum (n) Red-winged blackbird, Agelaius phoeniceus (n)
The song is rarely heard, and is a series of high-pitched whistles. [11] The song is usually given after dawn, but is almost never heard in the daytime, which is similar to the Puerto Rican oriole (Icterus portoricensis). [12] It is known that females of other oriole species sing, but songs by female Hispaniolan orioles have not been identified.
The song of the hooded oriole tends to be short and abrupt. The notes are rapid and lack the whistling nature of many other oriole species, and often sound nasal and whiny in nature. [6] There is a high amount of variation both geographically and individually within the song of the hooded oriole. Each male also sings many different types of songs.
The northern cardinal has a distinctive alarm call, a short metallic chip sound. This call often is given when predators approach the nest, in order to give warning to the female and nestlings. [5] The songs of the two sexes of the northern cardinal, although not distinguishable by the human ear, are sexually dimorphic.