All birds do

There are 8 varieties of Swallow. They are the Barn Swallow, Cave Swallow, Cliff Swallow, Bank Swallow, Northern Rough-winged Swallow, the Violet-green Swallow, Tree Swallow, and the Purple Martin.

Both parents care for the juvenile after its 4-6 week incubation period is over.

yellow, yellow orange, orange, red orange, red, red violet,

violet (purple) blue violet, blue, blue green, green, yellow green

red is above green so red

Blue & Orange, Blue-Violet & Yellow-Orange, Violet & Yellow, Red-Violet & Yellow-Green, Red & Green, Red-Orange & Blue-Green