Defining or Non-defining Clause?

[jupiter]

Happy New Year Everybody,

I would like to ask you one question concerning with the kind of clause.
Most flowers attract the animals, especially insects, who like to eat their nectar and pollen.

Is the clause who like to eat their nectar and pollen defining or non-defining clause?

Please explain me why it is defining clause and vice versa

Hope to get your helps
Jupiter

[Mister Micawber]

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It is a defining clause, limiting the kinds of animals who are attracted to flowers. The phrase, especially insects, is incidental information and is therefore set off by commas.
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_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mister Micawber