There's a lot of variables I guess as to which is the best metering.
A crow in the snow - it depends on how big it is in the rest of the frame, same for birds against the sky.
Coal tits or Blue tits often end up with blown cheeks or good cheeks with underexposed dark plumage.
I probably mix and match my metering mode based on subject and background but probably use spot more than others. Generally it requires a bit of +/- exposure comp based on the scene.