That would be Cirrus clouds.
Cirrus clouds are thin, white, and feathery.
You may mean Cirrus clouds, characterised by thin wispy strands, they also have the common name of 'mares tails'.
Cirrus (Ci): The ice-crystal cloud is a feathery white cloud that is the highest in the sky. It has a wispy looking tail that streaks across the sky and is called a fallstreak. - Kidzworld dot com
A cirrus cloud can be described as wispy and feathery.
Cirrostratus clouds.
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stratus
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A thin, hair-like cloud is typically referred to as a cirrus cloud. These clouds are high-altitude clouds composed of ice crystals and are known for their wispy, feathery appearance. They form at high altitudes where the air is cold and stable.
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"CIRRUS CLOUDS"...I Hope I can Help U..:))
An aigrette is another name for a lesser white heron, an egret, a feather or plume, or a feathery crown of certain seeds.