Our Home faces a Direct Southerly Exposure.. For Why I don't know but right at Sun Up a Yellow Finch would start pecking at the Kitchen Window, to the point now a Robin is doing likewise.. I tried hanging an old CD off the window to No Avail .. Looking for a way to Turn the Birds away and stop their Insistent Pecking.. It's beyond me what they'd find so interesting on our side of the window ?? Thoughts & Opinions Appreciated, Cheers Thanks

Bird, animals and insects often freak out on their own reflections in glass.

Lots of ideas on the web. (https://www.bing.com/videos/search?q=keeping+birds+from+attacking+windows&&view=detail&mid=5ACE71DCF309DAB622CD5ACE71DCF309DAB622CD&&FORM=VDRVRV)