'Spring messenger' is in danger of extinction

After 20 years, we may not have the opportunity to witness the swallow swallowing in the sky signaling the spring.

Over the past 15 years, the number of swallow birds has decreased by 40% and they may disappear if humans do not take protective measures. Most of us like to nest on the ledge under the roof and recess on the wall. However, modern construction techniques, the trend of building flat roofs and house repair activities make it difficult to swallow the nesting place.

"Modern buildings make swallow swallows unable to find shelter and birth. These birds will become extinct before 2028 if we don't protect them," Edward Mayer, chairman of the Swallows Conservation Organization, said. gender, speech. The organization calls on construction companies to create homes where swallows can nest.

"En only needs a small pocket on the wall or small ledge on the roof. They are gentle, clean guests and can make your life more poetic. If swallowing nest on your roof They will only stay there for 12 weeks in a year and then fly away, " Mayer said.

En is one of the fastest flying birds by knowing how to change the shape of the wings.They can cross the distance of 7,500 km in 13 days.Photo: Daily Mail.

Mayer also affirmed that swallows are beneficial to humans because they feed on flying insects - the agents that spread many diseases in tropical regions. If swallowing becomes extinct, malaria, dengue fever and many other diseases will be widespread throughout the world.

En is one of the best flying birds. They rarely land down and use most of the time in the air to hunt and pair. Even swallowing can sleep while flying. En is distributed in tropical and temperate regions. Each year they fly thousands of kilometers to avoid winter. Their speed in spring is 2-6 times higher than fall. The cause of this difference is because the eagles are eager to return to the nest in the spring to find a better partner and better shelter.

A swallow swallows at least 200,000 kilometers a year and averages 4.5 million kilometers throughout its life, equivalent to six trips to the moon and back, or about 100 times around the globe. She knows how to change the shape of her wings to fly quickly without much effort. They can reach speeds of 14-20 meters per second. If the aircraft has a wing-like mechanism like swallows, their speed can be tripled, while saving fuel.