Meaning of the word "there are no birds in last year's nest" in English

What does "there are no birds in last year's nest" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

there are no birds in last year's nest

US /ðɛr ɑːr noʊ bɜːrdz ɪn læst jɪrz nɛst/
UK /ðɛə r ɑː nəʊ bɜːdz ɪn lɑːst jɪəz nɛst/
"there are no birds in last year's nest" picture

Idiom

used to say that circumstances have changed and one should not look for things where they used to be or dwell on the past

Example:
He keeps trying to win back his ex-wife, but there are no birds in last year's nest.
Don't expect to find the same opportunities there; there are no birds in last year's nest.