1) Kind of pigeon 2) Like some pigeons 3) Orientating 4) Orienting 1) Orientating 2) Orienting 
[biology] Homing is the inherent ability of an animal to navigate towards an original location through unfamiliar areas. This location may be either a home territory, or a breeding spot. ==Uses== Homing abilities can be used to find the way back to home in a migration. It is often used in reference to going back to a breeding spot seen year...[hematopoietic] Homing is the phenomenon whereby cells migrate to the organ of their origin. By homing, transplanted hematopoietic cells are able to travel to and engraft or establish residence in the bone marrow. Various chemokines and receptors are involved in the homing of hematopoietic stem cells. ==Sites== ...
• (a.) Home-returning; -- used specifically of carrier pigeons. • (p.a.) Home-returning.
ability of certain animals to return to a given place when displaced from it, often over great distances. The major navigational clues used by ... [6 related articles]
the resetting of a sequential interrogating device to an invariant origin of sequence
The ability of a salmon or steelhead to correctly identify and return to their natal stream, following maturation at sea.
Hom'ing adjective Home-returning; -- used specifically of carrier pigeons. Hom'ing p.a. Home- returning. Homing pigeon , 
[adj] - orienting or directing homeward or to a destination
the behavior of returning home to the place in the stream where hatching took place
adjective orienting or directing homeward or to a destination; `the homing instinct`; `a homing beacon`
capable of returning home, usually over a great distance: We saw the homing birds at dusk. · guiding or directing homeward or to a destination, esp. by mechanical means: the homing instinct; a homing beacon.