Any explanation where these come from? Facehugger finding chickens and this is the result? Or is it the writer coming up with further designs that dont follow the set parameters? Or some more scientist somehow changing their dna to make new stuff like xenomorphs dna is super easy to do whatever with?
Reminds me of those insects in starship troopers 2, the design is none the less not very xeno, looks like chestbursters but they arent....