Colored clothespins indicate the feeding schedule of calves at Spruce Haven Farm in Union Springs, N.Y. The dairy feeds pasteurized waste milk to calves in hutches. Here’s what each clothespin color means:

  • Green = 2 quarts of milk twice a day from one to 10 days of age.
  • White = 3 quarts of milk twice a day from to 41 days of age.
  • Green = back down to 2 quarts twice per day for five days (41 to 46 days old.)
  • Red = 1 quart of milk twice per day from 46 to 51 days of age.
  • Blue = No milk beginning at 51 days of age.