In some birds, feather ornaments are expressed in nestlings well before sexual maturation, possibly in response to parental favouritism towards high-quality offspring. In species with synchronous hatching, in which nestling ornaments may vary more among than within broods, parents may use this information to adjust their parental allocation to the current brood accordingly. We tested this hypot...

Many marine molluscs are gathered by humans for food or ornament, and the archaeolog ica l record indicates that t radi t ional shellgather ing p layed an important ro le in smal l scale coastal soc iet ies around the world . However, few scienti f ic investigations of the subject have been made, perhaps because shell-gathering is usually done by women whereas anthropological studies often focu...

Carpet weaving is one of the most ancient types arts and crafts. The carpet a key symbolic object human creation. It all about its history kind, laws life Universe. has an encrypted language very complex. Most iconographic symbols are reflection reality cults worldviews. ornaments in carpets represent genetic memory, unfading creativity, national treasure. An Azerbaijani is, even for dedicated ...