5887
Although one bird will know many songs - as many as 20 different tunes with as many as 1000 improvised variations on the basic theme , - unlike thrushes , the song sparrow usually repeats the same song many times before switching to a different song .
 animal: thrushes
Please list all entity words in the text that fit the category.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} 
Answer:
 animal: thrushes