How long did insects fly before birds?

between 300 and 360 million years

Explanation:

Insects took to the empty skies sometime between 300 and 360 million years ago, long before birds, bats or pterosaurs. Wings allowed them to conquer new habitats and ecological niches, and Insecta quickly established themselves as one of the most diverse and successful animal classes, a position they still hold today

c. establishing proper sleep hygiene