Imperial staircase to imperial staircases are more often of just two flights (hence the name) leaving the ground symmetrically to join one common destination. Occasionally, especially in the architecture of the Sicilian Baroque, they will leave the ground as one flight and then divide, but this is less common. One may also see an imperial staircase in the form of two flights rising to join and then continue as one flight, but this is rare. Imperial staircase An imperial staircase (sometimes erroneously known as a "double staircase") is the name given to a staircase with divided flights. Usually the first flight rises
Imperial pigeon Imperial pigeon Ducula is a major genus of the pigeon family Columbidae, collectively known as imperial pigeons. They are large to very large pigeons with a heavy build and medium to long tails. They are arboreal, feed mainly on fruit and are closely related to the other genus of fruit-eating doves, "Ptilinopus". Both genera display brightly coloured plumage, predominantly green, often with contrasting under-parts of purple, orange or red. Some "Ducula" have prominently swollen ceres. They have large gapes and swallow seeds whole, playing an important role in seed dispersal. Imperial pigeons are found in forests of southern Asia, New