singing cagarros in the evening

This video is a registration of the singing cagarro's (Latin: Caleonectris diamodea borealis, Eng: a stormy petrol, named cory's shearwater, Ned: Kuhl's Pijlstormvogel) in the evening in the port of Velas (Sao Jorge, Azores, Portugal). In the second part of the video (darker than the first part) you can hear the singing of the birds better than in the first part