What makes robins sing at night? Vocabulary

What makes robins sing at night? Vocabulary

stock – adj – common, conventional, constantly recurring

to shed – to cast / give off
cast/shed/throw light on sth – provide an explanation for something which makes it easier to understand. Eg As a journalist and reporter, can you shed any light on this summer’s election?

to drown someone out – to make so much noise someone cannot be heard
to tire someone out = to exhaust someone