Well, the chick grew up into a chicken, but you’re still not sure how the egg got into that cave...

Space Chickens are a group of chickens who believe they were transported from outer space to the dragon cave with the sole purpose of taking over planet Earth. Unfortunately, a considerable amount of soldiers fall victim to the meat-eating inferior native inhabitants. As a counter measure, a new unit of this large army of strange hens was created: INCS or International Chicken Spies.

Each of these members is named after an actual chicken food dish.  As hard as it is to remember chickens lost in these horrific ways, they know it is for the greater good of saving future chickens.  Being with these names they are able to sneak into places and spy on humans and dragons alike by 'playing dead'.  Then as soon as the info has been obtained they create a scene and high tail it out back to the base camp and report any findings.