question: If one of the birds appears to have two heads in one of the images.
#1 return images 
#2 return birds in  #1 
#3 return heads of #2 
#4 return number of  #3 for each  #2 
#5 return #2 where  #4 is equal to  two 
#6 return number of  #5 for each  #1 
#7 return #1 where  #6 is equal to  one 
#8 return number of  #7 
#9 return if  #8 is equal to  one