Nests for mammals may function as permanent homes or merely as places to bear and rear young.
"Their parents have flown 5,000 miles from sub-Saharan Africa for the sole purpose of rearing young.
Many children of migrants live with grandparents, some of whom are not able to deal with the demands of rearing young children.
For the whole of prehistory, this separation of roles worked well, Morris says - a perfect union designed to rear young and perpetuate the species.
Ice sheets above these happy hunting grounds in turn offer the walruses a handy platform on which to rest and rear young.
Nesting colonies of the rock dove (Columba livia) were farmed by Neolithic husbandmen for food, and gradually the process of rearing young in confinement led to the production of domesticated strains.
There is a boomerang effect, characteristic of the parasite host relationship, that the more successfully a bird rears young cuckoos, the more certain it is that it will lose its own young, because they are killed off by the young cuckoo.
Save the Elephant Safari, Kenya This elephant-focused safari includes three visits to Daphne Sheldrick's Elephant Orphanage in Nairobi, which rears young elephants orphaned by poachers, along with two visits to elephant release sites in Tsavo National Park, with the David Sheldrick Wildlife Trust (01473 890 499; tribes.co.uk).
Ultimately, I found that especially in rearing young children, it's been useful (and rewarding) to approach my life with a sense of service, of "How can I help?" And I've actually found a lot of strength in this role.
All 17 bat species found breeding in Britain are protected by law and it is an offence to destroy roosts in houses, outbuildings or trees without a licence and professional advice to ensure they are not removed while hibernating or rearing young.
