
Shouldn’t the word bird in the first sentence be birds’ as it’s a nest for more than one?

Shouldn’t the word bird in the first sentence be birds’ as it’s a nest for more than one?
Shouldn’t the word bird in the first sentence be birds’ as it’s a nest for more than one?
You could use birds’ here, making it a genitive, but bird nest is something else, namely a compound. Now in the English language, the default grammatical number for the first part of a compound is singular. For example, a car park usually contains more than one car and an ant hill contains more than one ant.