No interactions present.
Definitely a peruvian pelican (Pelecanus thagus). Brown pelican (a vagrant bird in Chile), unlike peruvian pelican, has blackish gular sac and dark feet. In addition, brown pelican is considerably smaller than peruvian pelican.
It's great to have a chance to see birds spotted elsewhere in the world and test my ID skills outside my own area (UK)...I hope you and your colleagues in Chile don't mind my input into your 'patch'. :-)
You're Wellcome, Nev Wright! Your observations are an important contribution to us, and it will be a great pleasure for me to keep reading your comments. Best regards! :-)
Lat/Lng: -29.9686, -71.3538