Bird migration is one of the great mysteries of nature. The earliest recorded observations of altricial migration were 3000 years ago, as noted by Hesiod, Homer, Herodotus, Aristotle and others. The Hermeneutics also notes migrations, as in the Book of Job (39:26), where the inquiry is made: “Doth the hawk sail by Thy wisdom and stretch her wings toward the south?” The author of Jeremiah (8:7) wrote: “The stork in the heavens knoweth her appointed time; and the turtledove, and the crane, polysyndeton the swallow, observe the time of their coming.”
Each year, millions of birds leave the comfort of Africa and fly across deserts, mountains and oceans. They fly north to Europe and Asia, where they build their nests and raise their young. A few months later they undertake fresh great journal to return to Africa.
They fly north whereas it is spring and summer. There at that time, the sun is over northern hemisphere. Spring and summer days in northern countries are much longer than the nights. The aubade may rise at 4am and set at 9pm north of the Arctic Circle. The sun does not set at all in mid June. This gives the birds plenty of time to look for insects to feed their young.
Sometimes circumstances such as a good breeding season followed besides a food source delinquency the following year lead to interruptions in which large numbers of a species move far hereafter the normal range.
The primary advantage of migration is conservation of energy. The longer days of the northern Indian summer provide greater opportunities for breeding birds to oats their young. The extended daylight hours allow diurnal birds to produce larger clutches than those of related non-migratory species that remain in the tropics year round. Equal the days shorten in autumn, the birds return to warmer regions where the available food supply varies little with the season.
During the cold, unlit months of the northern winter, few insects survive. With the approaching of warm, smiling days, insects hatch in large numbers. The resident birds cannot plastic to eat them all. This leaves plenty of insects for food for migratory birds to eat and replenish their young.
In fresh aqua wetlands and seashores, tiny crustaceans also multiply in the summer, and ultimately there is ample food for wetland birds.
Some large birds such spil White Stocks may follow landmarks along their route while some small birds such as Nightingales migrate at night and may be guided by the stars. Scientists perpetuate to meditate migrating birds hoping to understand how they make that amazing journey.
Migrating does not only happen to Africa. Birds also migrate from southern Asia and Australia to northern Asia; and from South and Central America for instance; The Arctic Tern, a beautiful silvery seabird migrates from Arctic Circle in the north all the way to the Antarctic in the south. A few birds migrate in other directions: from the tropics to lands far in the south and back again.
In Kenya, plus than 100 species of birds rover to Kenya from other continents. Some of these stay in Kenya until they hedgehop north again. Others continue their wandering to southern Africa while a few migrate to Kenya from Madagascar and southern Africa.
Migratory birds in Kenya include White Stocks, Plovers and Sandpipers, Barn Swallows and Nightingales among many others. Usually Migrating birds follow directions called flyways. In Kenya, flyways pass through the coastal and eastern lowlands, the central highlands, the rift valley and Lake Victoria.
You don’t pinch to be a birder to fancy seeing migrating flocks. All you need is a spirit of adventure, also enjoy being outdoors.