Sonnet Sundays - Frosted Flight

I thought this wintery piece of natural wonder suited the changeable, yet often times frigid, weather we've been experiencing of late. I wrote it roughly 10 years ago, inspired by the gulls which used to land in my school grounds, but now it reminds me more of a sizeable flock which gathers on a neighbouring rooftop every afternoon. 

Frosted Flight

Pure white scavengers

afloat on high,

scream from the sky

so endless, so electrically blue.

Each glints in a haze

of winter sun

like stratospheric light bulbs,

off then on,

in chiaroscuro vortices

like paper planes

or frozen leaves,

like each were spume

blown from the sea,

a frosted crystal on a breeze.