I believe the answer is Shaping.
Shaping is a reinforcement technique which use a reward that given gradually after the subject is showing a certain desired traits.
On parakeets, this could be done by giving them a food reward everytime they move their head closer to the place where we want it to be (closer to your cheek)
Answer:
"The use of silk which was once bound to the nobility has now spread to all classes without qualification, even to the most minimal." The demand of silk kept on expanding consistently throughout the long term. The cost of silk was amazingly high in antiquated Rome.
Explanation:
From about the fourth century BC, the Greeks and Romans started discussing Seres, the kingdom of Silk. A few historians accept the main Romans to set eyes upon the astonishing texture were the armies of Marcus Licinius Crassus, Legislative head of Syria.
Something both Canada and England have in common is that they C. Both have a celebration of the queen's Birthday.
