A very few lethargic males remain in a pond busy with blossoming vegetation, hatching amphibian 
(A very few lethargic males; remain; in a pond busy with blossoming vegetation) (A very few lethargic males; hatching amphibian; )
A very few lethargic males A very few lethargic males
remain hatching amphibian
in a pond busy with blossoming vegetation