I was not clear. The zanates rest and nest in our trees, specifically the three coconut palms. They also hop to our three limón trees but only briefly; they prefer to stay high above. They are not the only birds in the garden; we also have ruddy ground doves and white winged doves nesting and I often see or hear others (including my favorite the groove billed ani), but they are by far the noisiest. I think our neighbors do not mind though because they do not remain in our garden but also hop over the walls to the tall trees in the neighboring gardens.
Where I live in the state is a bit far from the cattle farms but vultures could also circle for chickens or ducks (which my neighbors have) or anything I suppose. My mind always leaps to pets first though, unsure why.
That makes sense about the legs. In that observation they appear stretched rather than dangling loosely. (I wondered if maybe they could be used almost like a rudder because of how amazingly buzzards fly.)
Yes, they are survivors.