Soundwave - barn owl (only one where the original bird colors are completely changed. The barn owl has a distinct disc like face, black glassy eyes, and has great hearing, which i thought fit him very well, so that should make up for the color inconsistency)

Megatron - bearded vulture (the bird’s already piercing red eyes matches Meg well, along with the black/greyish feathers framing the face similarly to his helm)

Starscream - peregrine falcon (one of the fastest birds in the world. It has a distinct brow bone and the black/white face matches his helm somewhat)

Knockout - northern cardinal (a bright red bird with a spiked crown and black eyes)

Breakdown - blue indian ringneck (a blue bird with yellow touches, along with a red/orange beak like BD’s face)

Skyquake - great green macaw (a large green bird with red touches and a strong beak meant for crushing, blue wing feathers changed to match the glass of his cockpit)

Dreadwing - hyacinth macaw (a color variant of his twin: blue and yellow/gold)

Airachnid - rook (first considered making her a raven, but the rook’s already white beak matched her face better, plus iridescent/purplish neck feathers)