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A group of hooded crows in Tehran, Iran Leucistic hooded crow, in Russia. The hooded crow breeds in northern and eastern Europe, and closely allied forms inhabit southern Europe and western Asia. Where its range overlaps with that of the carrion crow, as in northern Britain, Germany, Denmark, northern Italy, and Siberia, their hybrids are ...
Hooded crow (Corvus cornix) in flight Jungle crow (Corvus macrorhynchos) scavenging on a dead shark at a beach in Kumamoto, Japan. Medium-large species are ascribed to the genus, ranging from 34 cm (13 in) of some small Mexican species to 60–70 cm (24–28 in) of the large common raven and thick-billed raven, which together with the lyrebird represent the larger passerines.
It arrived in Australia via ship but has up to now been exterminated. Recently, it has made its arrival in Europe and has been breeding in the Dutch harbour town Hook of Holland since 1998. A population between 200 and 400 birds has been present in Sham Shui Po , New Kowloon , Hong Kong , in particular Lai Kok Estate and Sham Shui Po Park , as ...
Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, magpies, jackdaws, jays, treepies, choughs, and nutcrackers. [1] [2] [3] In colloquial English, they are known as the crow family or corvids.
The genus contains 50 species: [1] Corvus splendens Vieillot, 1817 – house crow or Indian house crow (Indian subcontinent, Southeast Asia, Middle East, eastern Africa); Corvus moneduloides Lesson, RP, 1831 – New Caledonian crow (New Caledonia)
A clutch can comprise up to six eggs, though usually four or five are laid. Measuring 45 by 31 mm (1 + 3 ⁄ 4 × 1 + 1 ⁄ 4 in), eggs are green-cream and splotched with brown and grey markings. Eggs are laid every one to two days. [30] Eggs are quite variable, and thus which Australian corvid laid them cannot be reliably identified. [31]
Crows can vocally count up to four. The intelligent birds recognize and react to numbers in a process similar to that of human cognition, according to a new study.
Crows are scavengers by nature, which is why they tend to frequent sites inhabited by humans in order to feed on their household waste. Crows will also harass birds of prey or even foxes for their kills. Crows actively hunt and occasionally co-operate with other crows to make kills, and are sometimes seen catching ducklings for food. Due to ...