House Crow

House Crow

Indian crow, Grey-necked crow, Ceylon crow, Colombo crow, Indian house crow

Kingdom
Phylum
Class
Family
Genus
SPECIES
Corvus splendens
Population size
Unknown
Life Span
6 years
Top speed
52
32
km/hmph
km/h mph 
Weight
250-350
8.8-12.3
goz
g oz 
Length
42-44
16.5-17.3
cminch
cm inch 

The House crow (Corvus splendens) is a common bird of the crow family that is of Asian origin but now found in many parts of the world, where they arrived assisted by shipping.

Appearance

The House crow is relatively small and slim-bodied, with long legs and plumage that is mostly black or blackish-slate. ‘Shining raven’ is the meaning of its scientific name, referring to its glossy, jet-black feathers around the face, chin, crown, and throat. Males and females are similar in appearance. Juveniles have duller plumage which does not feature the adults’ glossy black sheen.

Video

Distribution

Geography

The House crow is widely distributed throughout southern Asia, from southern Iran through Pakistan, India, and Bangladesh and into south-western China, southern Tibet, and central Thailand, as well as the Maldives. It has been introduced to places in Africa, Europe, the Middle East, and several islands, such as Mauritius. A small population is established around St. Petersburg, Florida. It is typically a lowland species, found in both tropical and subtropical areas. Some, however, have been seen in Himalayan military bases. This bird is strongly associated with humans, living in cities, towns, and villages. Interestingly, no populations are known to live in areas where there are no people.

House Crow habitat map

Climate zones

House Crow habitat map

Habits and Lifestyle

A House crow is very intelligent and is always wary and alert, walking or hopping along while flicking its wings nervously. It is a diurnal, non-migratory, social species and gathers in noisy flocks and forms massive roosts. The flocks may consist of hundreds or thousands of birds, and this species will also gather with parakeets and mynahs in plantations and mangroves. House crows return to their foraging grounds just prior to dawn. It is a very noisy species, with a rather dry, flat, toneless call described as a ‘kaaan-kaaan’ or ‘kaa-kaao’. During social interactions, they also make a wide range of softer, nasal calls.

Seasonal behavior
Bird's call

Diet and Nutrition

House crows are omnivorous, eating rubbish, leftovers, debris, and sewage. They also eat lizards, fish, frogs, crabs, insects, nectar, fruits, the seeds of cereal, eggs, chicks, and small mammals.

Mating Habits

MATING BEHAVIOR
REPRODUCTION SEASON
varies with location, India: April-June; East Africa: September-June
INCUBATION PERIOD
15-17 days
INDEPENDENT AGE
21-28 days
FEMALE NAME
hen
MALE NAME
cock
BABY NAME
chick
web.animal_clutch_size
3-5 eggs

House crows are generally regarded as monogamous, forming long-term pair bonds. However many individuals seem to be somewhat polygynandrous (promiscuous) when both males and females have multiple mates. The breeding season varies depending on the location. In India, it is from April to June, at the start of the wet season, while in East Africa it is between September and June. They are usually solitary nesters and typically nest close to human habitation. Nests are often in trees, but their untidy nests are also found on ledges of buildings, street lamps, and electricity pylons. 3 to 5 eggs are laid, very variable in shape and color, with an average of 4 per clutch. A female may produce two clutches per breeding season. Incubation is for about 15-17 days and is done by both parents, but at night it is mainly the female. Chicks stay in the nest for about 21 to 28 days, being tended to by both parents, on which they are dependent for several weeks more on leaving the nest.

Population

Population threats

House crows are abundant throughout their extremely large range, and are not considered as globally threatened. However, colonies of this species in many areas have reached pest proportions, have spread rapidly, and are regarded as invasive. They cause economic damage by destroying crops and fruit and eating the eggs and chicks of domestic poultry. Singapore, Yemen, and some islands have tried hard to control House crow populations, and have had mixed success. In Yemen in 1984–86, about 240,000 of these birds were killed during a control operation.

Population number

According to IUCN, House crow is very abundant and widespread throughout its range but no overall population estimate is available. According to the Bird of India resource, the total number of House crows in India is around 34 million birds, including 19 100,000 or 19 million birds in urban areas and 15 000,000 or 15 million birds in rural areas. There are specific estimates of the species in the following areas: around 500,000 - 600,000 in the Mumbai city area; 133,000 con the Island of Singapore; and 5,500 on the Kharg Island in Iran. Overall, currently, House crows are classified as Least Concern (LC) and their numbers today remain stable.

Fun Facts for Kids

  • A House crow’s nest weighs as much as an impressive 25 kilograms. Usually the female builds the nest on her own.
  • Pet crows will give their owners names, making a unique sound in their presence.
  • Crows are able to count to six.
  • Crows sunbathe to take in Vitamin D.
  • Crows can eat over 1,000 different food items. Within 3 hours a nestling is able to eat 100 grasshoppers. They can be choosy, though: an experiment showed that crows prefer French fries from a McDonald’s bag rather than a brown paper bag.

References

1. House Crow Wikipedia article - https://en.wikipedia.org/wiki/House_crow
2. House Crow on The IUCN Red List site - http://www.iucnredlist.org/details/22705938/0
3. Xeno-canto bird call - https://xeno-canto.org/695285

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