Circulus. They are really puffy.
The most usual form of high-level clouds are thin and often wispy CIRRUS clouds. Cirrus clouds are usually found at heights greater than 20,000 feet. Cirrus clouds are composed of ice crystals that originate from the freezing of supercooled water droplets.
Cirrus clouds!
Serious clouds are high and wispy and lacking in a sense of humor.
Cirrus clouds
cirrus
Cirrus clouds are thin, wispy clouds usually formed at high altitudes.
Cirrus clouds are thin wispy clouds. They are over 6 kilometers up. It is freezing up there, so they are made of ice crystals. They can mean bad weather is on the way.
Cirrus cloyds are clouds that are thin and wispy! They are found high in the sky.
cumulus or cumulonimbus clouds...
cirrus
wispy
High, wispy clouds are generally categorized as cirrus clouds.