Large-Billed Crow (Corvus macrorhynchos) lives in temperate forests across East Asia, Southeast Asia. It feeds on insects and fruits. Its conservation status is Least Concern.
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A real field recording of the Large-Billed Crow, made in the wild.
The largest individuals of this species possess a bill that can reach up to 80 mm in length, giving them a strikingly massive beak for a crow. This extreme size is found in the C. japonensis subspecies, which measures its bill between 70 mm and 80 mm. By contrast, the smallest subspecies, C. culminatus, has a bill only 52-67 mm long, showing considerable variation across its range.
In Japan the large-billed crow has earned a reputation for aggressive behaviour, regularly launching unprovoked attacks on people who pass near its nesting sites. These assaults are especially common among the Japanese subspecies, which will also tear open garbage bags and steal wire coat hangers to line their nests.
Large-billed crows are highly skilled predators of small vertebrates, and in Sri Lanka they have been observed hunting endangered lizards with remarkable efficiency. In Horton Plains National Park a pair located, captured and consumed four critically endangered endemic lizards in just 45 minutes, demonstrating their rapid predation ability. This behaviour highlights the crow's adaptability and its role as an experienced lizard hunter within its forest habitat.
The large-billed crow's extremely versatile diet lets it exploit almost any food source, from ground insects to tree fruits and carrion, which enables it to colonise new habitats and become a pest on islands. It will take anything appearing edible, alive or dead, and is bold enough to rip open garbage bags and steal wire coat hangers for its nest in urban Japan.
Sources
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In the mist-shrouded forests of Asia, the Large-Billed Crow moves with an air of quiet intelligence, its sleek black form gliding effortlessly between the trees as it searches for hidden treasures. With eyes that shine like dark jewels, this masterful forager probes the underbrush with its sturdy, curved beak, uncovering secrets that lie hidden from less discerning creatures. As it takes to the skies, its wings beat with a slow, measured rhythm, a testament to its status as one of the most widely distributed and adaptable of all the corvids.
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