Characteristics of Sparrow’s and its Reason behind the disappearance
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| Male sparrow |
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| Female sparrow |
Scientific name: Passeridae Speed: House Sparrow: 46 km/h
Lifespan: House sparrow: 3 years.
Sparrows are generally social
birds, with many species breeding in loose colonies and most species occurring in flocks during the non-breeding season.
They form large roosting
aggregations in the non-breeding seasons that contain only a single species. Sites are chosen for the cover and include trees, thick bushes, and reed beds.
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| Water bathing |
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| Dust bathing and water bathing |
Some Sparrow’s (Passerine) birds engage in dust
bathing. Water bathing and dust bathing both similar for the sparrow standing in shallow water and flicking water over its back with its wings, also ducking its head under the water.
Hundreds of involved in social activities and participating at once and followed by preening and group singing.
The house sparrow is strongly associated with human habitation and can live in an urban or rural setting. It commonly feeds seeds of grains and weeds and also eats insects and many other foods. It has also often been kept as a pet, as well as being a food item. Hence the numbers of sparrows are being decreased in some particular areas like industries etc.
Auditory Sensitivity of Sparrows
Auditory sensitivity ranging from 2.0 kHz up to 8.0 kHz. above 8 kHz. The auditory sensitivity rate falls about 70dB/octave.
The reason behind to Evanish sparrows.
- Rapid changes in the lifestyles of humans in urban areas are increasingly incompatible with the conservative lifestyles of sparrows.
- Non-availability of tiny insects as food for sparrows due to loss of vegetation around our
modern buildings.
- Reason for
the dislocation of sparrows is due to excessive usage of mosquito repellents indoors and insecticides outdoors, our concrete architecture’s with no nesting sites and usage of air-conditioning which disallow sparrows to enter or exit
points.
- Increases in
noise from automobiles, produces high-frequency birds are sensitive enough to control the frequency. Along with noise rapid air pollution coming out from automobiles.
- Mainly high
usage of electromagnetic radiations from cell phone towers outdoors and the explosive use of diverse wireless devices.
- Due to this
synergetic effect of environmental pollutants has compelled sparrows to fly
away from human companions.
Since the
disappearances of sparrows were included in the IUCN Red List of Threatened species in the U.K and from 2010; March 20
has been adopted as a world sparrow day.
In 2012, Delhi adopted the House sparrow as its state bird.
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