The white bird, Little Miss Delaware, is such a goodie two-shoes. Evidently, she decided not to risk the escape. Or... was she the lookout?
Analysis of the surveillance camera footage have identified the culprits as (from L to R):
"Barbie" - an American Dominique.
"Little Miss Delaware" - a Delaware (She probably snitched on the others.)
"Red Girl" - Rhode Island Red
"EE" - An Easter Egger who lays colorful eggs.
If you see these hens on the loose, follow carefully at a distance and wait. I like mine over-easy.