3 · Human Being, Man in General
34 · man and animal
34B · domestic animals, kept in and outside the house
34B2 · domestic animal kept outside the house
34B23 · domestic birds kept outside the house
34B231 · doves, pigeons
34B231(+9) · doves, pigeons (+ zoological aspects of animals ~ man and animal)
34B231(+94) · doves, pigeons (+ animal behaviour)
34B231(+942) · doves, pigeons (+ feeding and care of young)
34B231(+9421) ·
doves, pigeons (+ nest, den, burrow)