What is the cuckoo's bleeding cry and the ape's previous sob?

The cuckoo bleeds and the ape whimpers. The first sentence is "What can be heard here sooner or later?" .

Poetry and what is heard here, morning and evening? The cuckoo's bleeding cry, the ape's sobbing. What did you hear here in the morning and evening? Except for the cuckoo's cry, there is only the sad cry of the ape.