Sentence:  With so many “<WSD>Chicken Littles</WSD>” running around claiming the sky is about to fall, the men at the top normally cannot do much until “Henney Penney” ["sic."] and “Foxy Loxy” have also started screaming for help, or there is a convergence of alarm signals from a number of unrelated sources within the organization. 
Meaning of the word marked with <WSD> tags:  The main character in this story, a hysterical young chick (alternatively named "Chicken Licken" under a different title) or, by extension, someone that resembles the character.