71554
It will sometimes attempt to take over the nest of other birds that breed in holes or enclosed spaces , such as the barn swallow , house martin , sand martin or European bee-eater .
 barn swallow, house martin, sand martin, European bee-eater
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:
 barn swallow, house martin, sand martin, European bee-eater