Altas PT Ultra

Maybe try: Reolink Altas PT Ultra $177.99 4K 360° Pan & Tilt Long Lasting Battery Camera with Pre-recording500-Day Long Lasting Battery (20,000mah)Up to 10s of Pre-recordingSolar Panel Support4K ColorX Night Vision360° Automatic TrackingWi-Fi 6 for Uninterrupted Streaming https://reolink.com/us/prod

There are ones that can be powered by solar panels. I use Reolink (but I use Power over Ethernet and get the heavy lifting done through a software called Blue Iris). Unless you get physical zoom feature, it will be very hard to catch faces. You also have to mount it really low, like face level. Even

Reolink Altas PT Ultra 24/7 recording out of a solar/Wi-Fi camera is a wonderful (and rare) thing. I just pulled up one I have for a display at my shop. I'm across town, and it loaded the live view in 3 seconds.

If money isn't an issue: Reolink Wi-Fi doorbell + Reolink Altas PT Ultra (with 12W solar panel) + Reolink hub Pro (if you need more days of footage) Argus 4 pro is also a good choice if you want full coverage of the backyard as it is a 180°, but the quality/performance will be worse than the Altas P