Common Grackles have iridescent heads that often look blue in the right light, and their bodies are a sort of brownish, iridescent black.
a Common Grackle is one
Blue bird
The Steller's jay, the western relative of the blue jay.
The small bird with a black head and white body is called a pied wagtail.
Red head and black body bird
The bird you are describing is likely the Western Meadowlark. It is known for its bright yellow head and body, black wingtips, and is slightly larger than a blue jay. It is a common bird found in grasslands and prairies across Oklahoma.
The bird with a red head, white neck, and black body is a red-headed woodpecker.
The Steller's Jay is blue with a black head and crest and lives in some areas of Mexico. There are other birds that could fit this ID, depending on lighting. Possibly a Blue Bunting, Blue Mockingbird, pr maybe a Little Blue Heron.
Burttrepha
The bird you are referring to is a Grackle. The female has the yellow eyes.
The bird you are describing sounds like a male Eurasian Blue Tit (Cyanistes caeruleus). It features a vibrant blue body, a brownish head, and distinctive black markings around its eyes. These small, colorful birds are commonly found in Europe and are known for their playful behavior and acrobatic feeding habits.
brown headed cow bird