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.
Two tubular nostrils are situated on the upper bill, a unique feature of the Procellariiformes, a group of birds which includes the shearwaters, albatrosses and petrels . Infrequently heard in flight, the sooty shearwater is a noisy bird when ashore; its most common calls are a der-rer-ah or coo-roo-ah .