Is the poetry of Charles Bukowski in the public domain?

I am an animation student at university in the UK, and Im hoping to use Charles Bukowskis poetry as a voiceover, but cant seem to find online whether

I am an animation student at university in the UK, and I'm hoping to use Charles Bukowski's poetry as a voiceover, but can't seem to find online whether I would need to get the rights or whether it is free to use within the public domain?

or:I am an animation student at university in the UK, and I'm hoping to use Charles Bukowski's poetry as a voiceover, but can't seem to find online whether I would need to get the rights or whether it is free to use within the public domain?

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