In the sentence, "The baby chicks are running around.", the plural noun is chicks.
There are no proper nouns, there are no possessive nouns.
Placing an apostrophe after the noun chicks does not make it a possessive noun. A possessive noun must 'posses' another word in the sentence; for example:
"The baby chicks' mother is running around."
A proper noun is the name of a specific person, place, or thing; for example:
"The baby chicks' mother Penny is running around.
You make the word - 'chick', in this case plural by adding an 'S' at the end. Chicks. You make it possessive by adding an apostrophe at the end. Chicks'. "I played with several chicks. The chicks' feathers are so soft!"
The possessive form of the singular noun chick is chick's cries (the cries of a chick).The possessive form of the plural noun chicks is chicks' cries (the cries of the chicks).
A brood is a group of animals hatched from one set of eggs. The brood of chicks followed their mother around the farmyard.
Chicks walk around until they get there feathers.
some
The hens are brooding; we can expect chicks soon.
The animals that are 'hidden in the sentence revenge of the animals' are rats, mites, and chicks.
There has to be a rooster around to get any chicks out of the eggs.
The not-so-painless method of cutting their head off...LIVE. They could still be alive after this, ever heard of the phrase "running around like a headless chicken".
Blue footed booby parents regurgitate fish to feed their chicks.
This morning the quail and her chicks walked across the dirt road.
the teacher tried to explicate to their students how a bird raises her chicks