λ Black-billed Magpie Black-billed Magpies, which are easily found of western North America, are social creatures. They often move in congregation and utter various sounds, ranging from trills, cackle, to whistle calls. The body size of the Black-billed Magpies is comparatively larger than jays. Bearing the long tails, large and heavy bills, and short wings, black-billed magpies seem to be cumbersome in flight (See Appendix A). The long tail plays the role of guiding sudden turns. The bird is almost entirely black with white shoulders and belly, also had shining dark wings and tail. There are distinctive white markings on the back, which can be clearly identified in flight. Owning exuberant vitality, the Black-billed Magpie is feeding on various
