We live near the mouth of the Rio de la Plata, and the water at the beach goes from being salt-free enough that the dogs will drink it, to being so salty that I can float (and I generally cannot float). Occasionally, best I can tell, the “wrong” water sweeps in, killing fish that aren’t adapted to it, which then wash up on shore. This looks a bit odiferous, and it was; I didn’t go for a walk this morning.
However, twice since we’ve been here I’ve seen the entire beach carpeted with dead fish, all their eyes pecked out by the birds.
I saw two raptors ahead on the beach. They took off, and flew over me. Large, with a most unusual wing pattern: white on the inside, black on the outside. Not just the flight feathers: a clean line in the middle of the wing. Stranger still, what they dining on appears to be another of the same species. Note the beak (head is bent under).
I have looked through hundreds of birds online and found nothing resembling these, which I would have guessed to be eagles.
I’ve seen this DTOTB before — any idea what it is?