How to remove this damn bird?

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Hello all, I’m a fairly inexperienced WordPress user, so forgive me. I set up a simple website as a blog: [www.sydneyluther.com])

For some reason on the blog archive page (“posts” page) in the Twenty Twenty Two theme, I can’t get into the header and remove this frickin’ bird image. I’ve looked around, tried the editor and customizer and templates, etc. Am I missing something???