Superstition concerning Swallow

There are many superstitions in Japan.

Almost all of them have no scientific basis, but some have make sense.

For example, it is said that "It will rain if swallows fly at low altitude."

As a low pressure system approaches, small bugs/flies get less able to fly at high altitude, because moisture attaches to their wings.

Since these small bugs/flies are baits of swallows, when they fly at low altitude, swallows also fly low to catch them.

I heard that the rain forecast based on the behavior of swallows is reliable in many cases.

ツバメに関する迷信

日本には数多くの迷信・言い伝えが存在します。

その多くは科学的な根拠がありませんが、筋の通ったものもあります。

例えば、「ツバメが低く飛ぶと雨が降る」です。

低気圧が近づいて湿度が高くなると、小さな虫は水分が羽に付いて体が重くなり、高く飛ぶことができなくなります。

小さな虫はツバメの餌であるため、虫が低く飛ぶと、ツバメもそれを追って低く飛ぶことになります。

このツバメの行動に基づく雨の予報は、高確率で当たると聞きました。

• There are many superstitions in Japan.
• This sentence is perfect! No correction needed!

• Almost all of them have no scientific basis, but some have make sense.
• Almost all of them have no scientific basis, but some make sense.

• For example, it is said that "It will rain if swallows fly at low altitude."
• This sentence is perfect! No correction needed!

• As a low pressure system approaches, small bugs/flies get less able to fly at high altitude, because moisture attaches to their wings.
• As a low pressure system approaches, small bugs/flies become less able to fly at high altitude, because moisture attaches to their wings.

• Since these small bugs/flies are baits of swallows, when they fly at low altitude, swallows also fly low to catch them.
• Since these small bugs/flies are baits of swallows, when they fly at low altitude, swallows also fly low to catch them.

• I heard that the rain forecast based on the behavior of swallows is reliable in many cases.
• I heard that rain forecasts based on the behavior of swallows are reliable in many cases.

• Since these small bugs/flies are baits of swallows, when they fly at low altitude, swallows also fly low to catch them.
• Since swallows eat these small bugs/flies, when they fly at low altitude, swallows also fly low to catch them.

  "Bait" is used for fishing and hunting to trap an animal.