Are woodpeckers, magpies and swallows good birds or bad birds? What kind of food do you eat?

In daily life, we often see all kinds of birds such as woodpeckers, magpies and swallows. Many people will not know whether they are beneficial birds or harmful birds. Beneficial birds and harmful birds are seen from the point of view of human interests. Beneficial birds are good birds for human beings. Harmful birds are harmful to human beings.

Beneficial birds refer to those birds that prey on pests, harmful animals or have been proved by modern science to be directly or indirectly beneficial to human beings. There are many kinds of beneficial birds, which vary greatly in living environment, physiological structure and living habits. Among the Chinese people, some beneficial birds have been well known and protected, some are not known, and some are even treated as harmful birds. In 1982, the Chinese government decided to hold "Bird week" in the first week of April every year.

Are woodpeckers, magpies and swallows beneficial or harmful?

Of course, our common wood birds, magpies and swallows all belong to beneficial birds. A woodpecker can drill a hookworm in a tree. Its mouth is long, sharp and hard, it can stick into the hard xylem all the time, its tongue is long and thin, it has many barbs, and its surface is covered with a layer of mucus, which can accurately hook out the pests. It mainly eats longicorn beetles, transparent-winged moths, gibberries and other pests hidden inside the trunk. It is called the "forest doctor".

Of the food eaten by magpies in a year, more than 80% are insects that harm crops, such as locusts, mole crickets, beetles, night moth larvae or pine caterpillars. 15% are seeds of cereals and plants, as well as seeds of birds, snails, melons and fruits, and weeds. Therefore, magpies are very beneficial to human beings. On August 1, 2000, the magpie was listed in the list of terrestrial wildlife with important economic and scientific research value issued by the State Forestry Administration, which has important protection value.

The swallow is like the famous swallow, with small shape, narrow wing tip, short beak with concave tail, weak feet and not too many feathers. Feather clothes are monochrome or metallic blue or green; most species are very similar to both sexes. Swallows spend a lot of time in the air to catch pests, is one of the most flexible finches, mainly mosquitoes, flies and other insects as the staple food, is well-known good birds. Nest in tree holes or cracks, or drill holes in sand banks, or in urban and rural areas to stick mud to the walls or protrusions of corridors, roofs, eaves, etc.

Other common beneficial birds

1. Insectivorous and beneficial birds

Red-bellied eagle fan tail sand cone four cuckoo big cuckoo big cuckoo blue emerald Nighthawk blue emerald three treasure bird Dai Sheng black pillow green woodpecker spotted woodpecker star pecker blue-winged bird blue-winged thrush golden waist swallow white turtle mountain dark gray cuckoo green-billed Bulbul white-headed Bulbul tiger-tailed Shrike brown-backed Shrike black pillow yellow bird black curly tail crown crow red-billed blue magpie gray curly tail Magpie, blackbird, red-tailed thrush, brown-necked hooked-billed Babbler, black-faced babbler, thrush, big Reed warbler, yellow-waisted willow warbler, yellow-waist willow warbler, long-lived bird, great tit, three-browed grass bunting.

2. Rat-eating and beneficial birds

Red horned owl, carved owl, long-eared owl, longitudinally striped owl

3. Herbivorous and beneficial birds

Ring-necked pheasant white-crowned long-tailed pheasant red-breasted field chicken white-breasted bitter bird Dong chicken black water chicken crested wheat chicken goldfinch

4. Sowing beneficial birds

Yellow-buttocked Bulbul mercerized Starling gray starling starling tin-billed Finch

Sometimes there is no fixed dividing line between beneficial birds and harmful birds, and insectivorous birds may destroy crops when they are hungry. The key point is that we should pay attention to include biological chains and not to destroy them artificially.