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.
Along with some other species of grackles, the common grackle is known to practice  anting , rubbing insects on its feathers possibly to apply liquids such as formic acid secreted by the insects. This bird's song is particularly harsh, especially when these birds, in a flock, are calling.ridescent male common grackle. Adult common grackles measure from 28 to 34 cm (11 to 13 in) in length, span 36â46 cm (14â18 in) across the wings and weigh 74â142 g (2.6â5.0 oz).