we haven’t seen a cagarro (aka cory’s shearwater) yet, but we have heard plenty of them in the middle of the night, cackling somewhere in the backyard of house we’re staying at in pico. they spend all their time in the sea, and come back to land during the night to check on their nests, so there must be one somewhere behind the house. :| the sound is loud and super creepy… gave us a proper fright the first night!