AT LEFT, FULL ABDOMEN INDICATES LAYING CONDITION. AT RIGHT, 
CONTRACTED, HARD ABDOMEN INDICATES THAT THE HEN IS NOT LAYING 
AT LEFT, WIDE SPREAD BETWEEN KEEL AND PELVIC BONES AND 
BETWEEN PELVIC BONES THEMSELVES INDICATES LAYING CONDITION. 
AT RIGHT, NARROW SPREAD INDICATES NONLAYING. THE LOWER 
CROSSES MARK PELVIC BONES AND THE UPPER MARKS END OF KEEL. 
NOTICE ALSO MOIST, LARGE VENT AT LEFT, AND SMALL, DRY VENT 
AT RIGHT 
