The influence of food factors on the migration of wintering birds

The influence of food factors on the migration of wintering birds

More than 120 species of birds live in the Chuvash Republic. Birds delight us with their diversity mainly in spring and summer. For the winter, most of the birds in our fields, forests and ponds fly south. In autumn you can see schools of flying cranes, geese, and ducks; flocks of song thrushes, starlings, skylarks, buntings. There is no dispute: the vast majority of birds do fly away. But in general, birds tolerate the cold well. Feathers and down make a very warm dress, and bird blood is so hot that birds are not afraid of frost. Another thing is hunger. Feeding in winter is much more difficult than in summer. And yet, about 50 species of birds remain to spend the winter with us.

In winter, the life of birds, compared to the spring-summer period, is quite monotonous and consists mainly of sleep and migrations in search of food. In a short 6-7 hour winter day, they should be so full that they have enough energy to survive the long frosty night. In search of food, birds migrate into the cultural landscape and feed in close proximity to people, even concentrating in crowded places, hoping for a handout. This allows for the most complete and effective use of the forage potential of the cultural landscape during the most difficult period of the year.

Our village is large, has 320 courtyards, and has 15 streets. Our street is called Green and is located one and a half kilometers from the school. The school is located on Malye Chuvaki Street. A small river, Yunga, flows between the streets. Bird counting took place after school at 2:30 p.m. It takes me 30 minutes to walk home; looking around, she counted the birds she saw. Mostly these were familiar birds: jackdaws, sparrows, tits, pigeons, crows. I met a magpie and an owl several times. Birds were more often found near houses, barns, hay and straw stacks, and near schools - near feeders.

    Owl order (Strigiformes) – Great owl.

    Order Passeriformes

  • Family Corvidae - common crow, jackdaw, magpie.
  • Tit family (Paridae) - great tit.
  • Weaver family (Ploceidae) – house sparrow, tree sparrow.

Order Pigeons (Columbiformes) – rock pigeon.

In the first 9 days I counted 176 birds; the weather was warm, there was little rain; The most numerous were sparrows (176 pieces), I saw an owl once, and never met tits. At the second stage I counted 185 birds. The weather was relatively warm, light precipitation in the form of rain and sleet, and there was no snow cover yet. Sparrows were again the most numerous - 131. I saw an owl twice. Tits (6 pieces) appeared at the feeder near the school.

At the third stage, I counted only 88 birds. The weather was cloudy, it snowed almost every day, it was wet, windy, and snow covered. The most numerous were sparrows - 45 birds, pigeons - 16 birds, tits - 10, crows - 9, forty were seen twice. At the fourth stage I counted 100 birds; snow cover, sub-zero temperature. Vorobyov counted 37 birds, tits - 17, crows - 16, pigeons - 12, jackdaws - 11, forty - 6. Most of the birds I saw were near houses, barns, hay and straw stacks, landfills; I most often saw tits near the feeder near the school.

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