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The American grey crested pigeon (Psudeogeophaps griseo), also known as the American gray crested pigeon, is a species of pigeon that originally did not exist, but has since been created by SciiFii and introduced throughout the rainforests, wetlands, forests, open woodlands, grasslands, and shrublands across North America to help boost biodiversity. Despite resembling the Australian crested pigeon in size, appearance, and lifestyle, the American grey crested pigeon is only distantly related to the Australian crested pigeon, and is most closely related to the passenger pigeon (Ectopistes migratorius). The length of the American grey crested pigeon varies from 30 to 34 cm (12 to 13.6 in). Colouration is grey with tinges of grey, brown, and yellow. It has a feathered but slender, black spike on top of the head. It runs with the crest erect. The periorbital skin is bright orange. Wings have black stripes and are bronzed, while the primary feathers have colourful areas of brown, purple, blue, and green. Immature birds have duller colours with no bronzing on the wings. The birds can be normally seen in two sizes, they can be thin or plumped. It is almost impossible to tell if the American grey crested pigeon is male or female, because they have the same plumage. The American grey grey pigeon's diet primarily consists of small insects, small bushes, green vegetation, weeds, and seeds. They usually feed on the seeds of acacia trees, mulberry trees, oak tree, and among others. They usually eat and drink in the mornings and evenings. The American grey crested pigeon's diet also includes some fruits and vegetables. If startled, the American grey crested pigeon takes to the air with a distinctive whistling 'call', the source of the noise can be attributed to the way the air rushes over a modified primary feather found on the wings. This noise is produced to draw the attention of predators to birds on the wing, and away from any birds remaining on the ground, and as an alarm call to other pigeons. When the birds land, their tails tilt upwards and the flight patterns are similar to those of the Australian spotted turtle dove. They can be highly social and tend to be seen in flocks of varying sizes. They are highly gregarious birds when in contact with humans. The American grey crested pigeon breeds in the warmer spring months. Males approach females and begin an elaborate mating dance; they bob their bodies up and down, while opening and closing their wings like a fan with each bob. This is accompanied by a soft hooting which is timed with the bobbing. If the female is interested, she remains generally stationary as the male approaches, until copulation is attempted. Nesting usually occurs in shrubs or trees. Nests usually consist of a platform of twigs. They lay three-four oval, white, glossy eggs. The eggs usually hatch 3 weeks after they were laid. Both parents incubate the eggs. The conservation status of the American grey crested pigeon is Least Concern due to successful conservation efforts, the American grey crested pigeon's wide range and its tolerance to many of the human activities.