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.
All shearwaters, like the Pink-footed, nest in burrows, which they visit only at night to care for their eggs and young. The birds forage over the open ocean, diving to depths of over 150 feet in pursuit of schooling fish and squid.