69950
But ion wind generators , which have no moving parts , could be used in urban settings where wind turbines are impractical due to vibrational noise , moving shadows , and danger posed to birds .
 animal: birds
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: birds 
Answer:
 animal: birds