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Showing posts with label corvidae. Show all posts
Showing posts with label corvidae. Show all posts

Monday, June 17, 2019

Large-billed Crow (Corvus macrorhynchos)

(50 cm.) Glossy black; long heavy bill; square tail.

The Large-billed Crow, often referred to as the “Jungle Crow,” is another member of the family, “Corvidae,” which includes jays and magpies. It is a typical family member in many ways. Like magpies, jays and other crows, it is an omnivore which can consume just about anything. This bird is also highly intelligent, so much so, that it has even been credited with tool-using intelligence. It is an aggressive bird that will readily resort to predation as a food gathering technique. As this bird is an omnivore, one could argue that its predation is unnecessary behavior.

In China, the crow is considered a sign of bad luck. Its close cousin, the Black-billed Magpie, is considered as a sign of good luck and is often called, the “lucky bird.” However, the bad luck tag could easily be attached to both these species as they share some nasty personality traits.

The Large-billed Crow has been tagged as the bird species most likely to attack and kill live domestic chickens. It will also kill other bird species and other small vertebrates such as small mammals.

In addition to the prey items that constitute a large part of its diet, the Large-billed Crow consumes a wide variety of animal and plant matter, both living and dead. This tremendous versatility in diet has allowed this species to be very adaptable and settle in places where they can quickly become a nuisance to local people and wildlife.

As could be expected for such an adaptable bird, the Large-billed Crow is a very widespread species, and is found from eastern China to as far west as Iran. Its range in the south extends as far as the Philippines. Due to its great versatility in diet, the bird has no need to migrate.

During the breeding season, this species builds a platform nest of sticks which is set high in a tree. It seems to prefer fir or pine trees as a nesting site. The female lays 4-5 eggs.

Large-billed Crows often gather in large groups at nighttime roosting sites. At times, especially during the non-breeding season, thousands of these birds can be found at a single roosting site.




Large-billed Crow (Photo by JM Garg)

Tuesday, November 18, 2014

Black-billed Magpie

The robust bird depicted in the photo at the top of this page is the Black-billed Magpie. This bird is a ubiquitous presence in Qingdao and much of Eastern China. Following is a description of this species' life and habits.

Field marks: Large (45-60cm.); iridescent, black and white, long tail.  Black portions of bird appear to be a green or blue in the right angle of light.
喜鹊 – xǐ-què – ‘magpie’

The Black-billed Magpie is one of the most familiar birds on the East Coast of China. It is widely known as the “lucky bird” by the Chinese, and it is associated with good luck and fortune for those who encounter it.

In fact, this species, while extremely handsome, has a far less attractive disposition and reputation. It should be noted that all species of magpie belong to the family, “corvidae.” This is the same family as the crow and the raven-two species better known for their association with bad luck and devilment as opposed to good fortune. All members of the family corvidae including magpies, crows, ravens and jays, are extremely intelligent animals and are considered by many ornithologists as the most intelligent of birds. However, this family also has a reputation for savagery.

The Black-billed Magpie is an omnivore, and it indeed consumes a large variety of foods. In addition to eating nuts, seeds and berries, it will take small rodents such as mice. The black-billed magpie, along with other members of its family, is known for its predatory behavior and will often dine on the young chicks of other bird species. It will also attack and bully cats, dogs, and other birds that may venture too close to it or its territory. It is clearly not a lucky bird for those species upon which it preys and wreaks havoc.

This species, in addition to its range in China is also found in the western part of North America. It can be found throughout much of western North America as well as  other locations in Asia. The species seems to be particularly successful on the East Coast of China, especially around Qingdao, where it appears to be as common as people.

This species is non-migratory, unlike most other songbirds. It may wander in order to find new food sources, but it does not undertake large scale migrations in spring and fall.

The Black-billed Magpie frequents open country such as fields and pastures with scattered trees. Its love of this habitat makes it an ideal city dweller, where it can find parks and suburban sprawl. It is this adaptability that we can admire about this bird, and although this magpie may be a scourge to other birds it will not bother people beyond attempts to steal scraps of food from your garbage.

Like many non-migratory species, the Black-billed Magpie breeds early in spring. It builds a large, domed nest of loosely bound twigs and the female lays 6-10 eggs. Young magpies can fly after about one month after hatching and feed themselves in two months.

Black-billed Magpie(Photo by Brian Westland)