68712
Although albino peafowl do exist , this is quite rare , and almost all white peafowl are not albinos ; they have a genetic condition called leucism , which causes pigment cells to fail to migrate from the neural crest during development .
 albino, leucism
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:
 albino, leucism