Because of their longer tongue, they may be able to recover nectar from a greater variety of night-blooming plants than the other 
(they; may be; able to recover nectar from a greater variety of night-blooming plants than the other) (they; to recover nectar; from a greater variety of night-blooming plants than the other)
they they
may be to recover nectar
able to recover nectar from a greater variety of night-blooming plants than the other
from a greater variety of night-blooming plants than the other