Fmtercula arctic a 



Total Weight - gmms 



Black Green Red 



• Corvidae Anatidae Ciconiiformes 



D Hirundinidae Caviidae Stngiformes 



G Apodidae Podicipedldae Vanellinae 



o AH others Galliformes Falconi formes 



A Laridae 



1000 



Fig. 4 



