Kahuli are called tree-shells in English. They're snails that make noises like crickets.

Kahuli aku - (Mele Kahuli) - Hawaian Children's Songs - Hawaii - Mama Lisa's World: Children's Songs and Rhymes from Around the World  - Intro Image

Notes

Kahuli are called tree-shells, which are snails (pictured) that make noises like crickets.
Akolea is a type of long growing fern
Kolea is a red-breasted bird of the plover family

Comments

This song and illustration comes from a book from 1909 called Unwritten Literature of Hawaii
The Sacred Songs of the Hula
by Nathaniel Bright Emerson. Click the link to access the book online at Project Gutenberg.

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