Barn swallow (Hirundo rustica)

Layang-layang api or barn swallow (Hirundo rustica) is a species of animal in the Hirundinidae, a distinctive warbler with a blue-black top, long forked tail, a pair of legs strong but not strong enough to fly non-stop all day long and often perch in large groups on power lines and man-made structures.

H. rustica has a length of 17-19 cm including 2-7 cm of elongated outer tail feathers, a wingspan of 32-34.5 cm and a weight of 16-22 g. The top part is blackish blue, the bottom part is white with a long vertical line forming a curve to the stomach.

The forehead, chin and throat are reddish brown. Elongated forked tail feathers and a white stripe along the outer end of the upper tail. The female has a shorter tail band and a paler underside. Juveniles are browner, the underside is whiter and do not have a long tail band.

Barn swallow likes open areas including meadows and farmlands with water at altitudes up to 3,000 m. These birds usually grab prey in open areas above ground or above shallow water including large flies, aphids and flying ants.

Females lay 2-7 eggs, reddish white, 20x14 mm, weigh 1.9 g and 5% are shells. The incubation period is usually 14-19 days with another 18-23 days before any altricial children become adults. The mother feeds for about a week before migrating.

The success of hatching is 90% and the mature survival rate is 70-90%. Mortality rates are 70-80% in the first year and 40-70% in adults. Most survived to less than four years, even though the record age was over 11 years.

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Aves
Order: Passeriformes
Family: Hirundinidae
Genus: Hirundo
Species: Hirundo rustica
Subspecies: Hirundo rustica ssp. erythrogaster, Hirundo rustica ssp. gutturalis, Hirundo rustica ssp. mandschurica, Hirundo rustica ssp. rustica, Hirundo rustica ssp. savignii, Hirundo rustica ssp. transitiva, Hirundo rustica ssp. tytleri

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Tekijem ( Cyperus cyperoides ) is a plant species in Cyperaceae, annual grasses that grow in seasonal wetlands, open or shaded fields, swamps, ponds, rice fields, roadsides, open forests, secondary forests and shrubs at altitudes up to 1,800 m in the tropics. C. cyperoides has an upright, triangular shape, 20-75 cm tall from a very short rhizome and has no stolon. The lanceolate-shaped leaves are narrow and long, the tips are pointed, slippery, shiny, green and grow at the bottom and at the top of the stem. The terminal flower appears on the tip of the stem, cylindrical spiklet shaped and green. Each stem has two to seven flowers, each of which has a short or long stem that grows at the end of the stem together with the leaves. Tekijem grows solitary or in small groups at a distance. Propagating using vegetative and generative methods using seeds. At least three sub-species are Cyperus cyperoides cyperoides , Cyperus cyperoides flavus and Cyperus cyperoides pseudoflavus . Th...

Dry Valleys on Antarctic continent is the driest place in the world

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