73331
However , based on studies of prey remains and pellets in laboratories from Greenland white-tailed eagles , birds were shown to be biased in both kinds of remains ( pellets and prey remains ) whereas in situ study and direct nest observation favor fish .
 Greenland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Greenland