Is the ttartisan 500mm f 6 3 long enough for birds?

Here is what the site says about that.

From TTArtisan 500mm f/6.3: TTArtisan 500mm f/6.3: A prime lens by TTArtisan for Full frame cameras, 500mm f/6.3. Specs - Maker: TTArtisan - Focal length: 500mm (prime) - Maximum aperture: f/6.3 - Made for: Full frame sensors - Mounts: Sony E, Fujifilm X, Nikon Z, Canon RF, L-Mount, Canon EF, Nikon F - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, Canon RF, L-Mount, Canon EF, ...

From Sony FE 200-600mm f/5.6-6.3 G OSS: Sony FE 200-600mm f/5.6-6.3 G OSS: A zoom lens by Sony for Full frame cameras, 200-600mm f/5.6-6.3. The usual bird lens on Sony: long, internally zooming, and fair value.

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