Many are partly to entirely black, often with iridescence or bright markings of some sort. Most blackbird species form flocks at certain times of the year, and many form multispecies flocks. Blackbirds live in open habitats and eat seeds, grain, and insects.
The definition of a trepidation is a trembling movement, fear or nervousness. 1  An example of trepidation is when a speaker's hands are shaking due to nerves while giving a speech. 2  An example of trepidation is an anxious feeling before the first day of college.
Trepanning, also known as trepanation, trephination, trephining or making a burr hole (the verb trepan derives via Old French via Medieval Latin from the Greek noun of relevant meaning trypanon, literally borer, auger) is a surgical intervention in which a hole is drilled or scraped into the human skull, exposing the dura mater to treat health ...