Which American Kestrel is this, anyway?

 The Kestrel suddenly appeared on a high tree over the marsh as I walked at the refuge this morning – what a lovely surprise!  According to Florida Fish & Wildlife, the Southeastern American Kestrel (Falco sparverius paulus) is a permanent resident of Florida, whereas the common American Kestrel (Falco sparverius) that is found throughout the northern states is a winter migrant […]