kokido

Two pieces, and you already own both. Koko at rank 1,766 is the bird. -Id- is the offspring suffix. A kokido is therefore a chicken's young, which in English needs a word of its own, chick, unrelated to chicken by anything the eye can see. Esperanto does not need one, and this is the first place in the course where the suffix does real work rather than appearing in a list.

The whole -id- family runs on the same rule. Bovo an ox gives bovido a calf; ĉevalo a horse gives ĉevalido a foal; kato gives katido a kitten, hundo gives hundido a puppy, anaso gives anasido a duckling, and a fantasy novel will happily write drakido for a dragon's young without explaining itself. The suffix also works on people: reĝo a king gives reĝido, a king's child, hence a prince. That last one is worth keeping in mind on the next page but one, where another word in this band opens with reĝ- and has nothing whatever to do with kings.

The nearby birds, and the fence around the meat. A kokino is a hen, koko on its own leans towards the cockerel, and virkoko says so explicitly when the context needs it. What kokido does not mean is chicken as food. That is kokidaĵo or kokaĵo, with the -aĵ- suffix that turns a creature into the substance it yields, exactly as bovo gives bovaĵo for beef. Ordering kokidon in a restaurant asks for a live chick.