The term 'thieving bird' is a reference to two different species of birds. The first is the DAW, which is a three-letter acronym for the common name of the Eurasian JACKDAW, a species of crow found in Europe and parts of Asia. The second is the JACKDAW, a seven-letter acronym for the same species of crow. Both species are known for their intelligence and thieving behavior, often stealing small items from humans.