Usually, watchful waiting is an outpatient process and may have a duration of months or years. In contrast, medical observation is usually an inpatient process, often involving frequent or even continuous monitoring and may have a duration of hours or days. 1 Medical uses.
Shearwaters earned their name by their ability to cut - or shear - the water with their wings, although until recently they were known as 'muttonbirds'. This name was given to them by early European settlers, who killed the birds for food and found that their flesh tasted like mutton.
When it comes to birds, preening serves a few difference purposes. Preening aligns their feathers to provide insulation and protection from weather. It's also a way for them to get rid of lice, and it makes them more attractive to potential mates.very feather has tiny interlocking hooks called barbs, and preening makes all of the tiny barbs line up like a â¦ zipper. Preening makes a bird look and feel its best. While preening, birds will also pluck dead feathers and pick the sheaths off of new growing feathers.