Mariana Crow

The Mariana Crow is a small black crow with a bluish-black gloss on its tail, and a greenish-black gloss on its back, underparts, head, and wings. In general, females are smaller than males. An adult weighs about 9 ounces and is about 15 inches long.

The Mariana Crow is classified as Critically Endangered (CR), facing an extremely high risk of extinction in the wild.

The Mariana Crow used to be found all over the limestone forests of Guam and Rota, which grow in the remnants of coral reefs built up atop underwater volcanoes. The accidental but devastating introduction of the brown tree snake onto Guam finished off the crows on that island. Rota was spared the brown tree snake, but the crow population there has also declined dramatically over the last 20 years. A team from the University of Washington is working hard to understand why. More

The Mariana Crow (Corvus kubaryi) is a species of the crow family from the north Pacific. It is an endangered species which has steadily declined in numbers since the 1960s. Contents - * 1 Description * 2 Distribution and ecology * 2.1 Diet * 2. More

Extremely versatile, the Mariana Crow is an opportunistic omnivore, feeding on insects, lizards, other birds' eggs, hermit crabs, fruits, and seeds. Nesting The Mariana Crow begins nesting as early as July and as late as March. The nest is a large, cupped platform of small sticks, lined with leaf fibers. Clutch size varies from 1-4 eggs, and both parents incubate the eggs, brood the chicks, and care for the juveniles even after they fledge. More

Mariana crows in captivity Mariana crows in captivityPrint factsheet Facts - Also known as: aga, Guam crow Kingdom Animalia Phylum Chordata Class Aves Order Passeriformes Family Corvidae Genus Corvus (1) Size More

The principal cause of the Mariana crow’s decline on Guam has been predation by the introduced brown tree snake Boiga irregularis. Despite protection of nest sites, this has resulted in the near complete extirpation of the species, with the exception of a small number of introduced specimens (2). More

The åga, or Mariana Crow, once occurred in most of Guam. Now, only small numbers survive in forests at the northern end of the island. At one time, farmers used to shoot the åga because it raided corn fields and ate baby chickens. Now there are too few of them to do any damage to farms. Predation by the brown tree snake is responsible for the decline of this species. Åga sometimes fly in groups for long distances. More

The Mariana Crow (Corvus kubaryi) is a species of the crow family from the north Pacific. It is an endangered species which has steadily declined in numbers since the 1960s. Description The Mariana Crow is a small black crow with a bluish-black gloss on its tail, and a greenish-black gloss on its back, underparts, head, and wings. In general, females are smaller than males. An adult weighs about 9 ounces (250 grams) and is about 15 inches (38 centimetres) long. More

Mariana crow and the Rota bridled white-eye populations have significantly declined in recent decades. The Mariana common moorhen is found at one location on Rota, the Rota Resort, where the island's only freshwater wetland habitat exists. Two species, the Mariana swiftlet (Aerodramus bartschi) and the Micronesian megapod (Megapodius l. laperous), were historically present on Rota, but have since been extirpated. A small population of the Mariana common moorhen has become established at the wastewater treatment ponds of the Rota Resort. More