Cayenne ibis
The green ibis (Mesembrinibis cayennensis ), also known as the Cayenne ibis, is a wading bird in the ibis family Threskiornithidae. It is the only member of the genus Mesembrinibis.
This is a resident breeder from Honduras through Nicaragua, Costa Rica and western Panama, and South America to northern Argentina. It undertakes some local seasonal movements in the dry season.
Crepuscular animals are those that are active primarily during twilight (that is, the periods of dawn and dusk). This is distinguished from diurnal...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
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CongregatoryCongregatory animals tend to gather in large numbers in specific areas as breeding colonies, for feeding, or for resting.
Oviparous animals are female animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive...
Precocial species are those in which the young are relatively mature and mobile from the moment of birth or hatching. Precocial species are normall...
Gliding flight is heavier-than-air flight without the use of thrust and is employed by gliding animals. Birds in particular use gliding flight to m...
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SocialFlocking birds are those that tend to gather to forage or travel collectively. Avian flocks are typically associated with migration. Flocking also ...
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Not a migrantAnimals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
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starts withThe green ibis is a medium-sized ibis, with short legs and a long, slender, decurved bill. It measures 45–60 cm (18–24 in) in length and ranges from 700 to 890 g (1.5 to 2.0 lb) in mass. The sexes, which are identical in plumage, overlap somewhat in measurements, though the largest birds are male. Breeding adults have glossy greenish-black bodies, pale green legs and bill, and grey bare facial skin patches. Juveniles are much duller, but can be distinguished from the similar glossy ibis by their bulkier shape, shorter legs and broader wings. This species, like other ibises, flies with neck outstretched. Its flight is heavy, with fewer glides and jerkier wingbeats than its relatives.
The green ibis is found from Costa Rica south to northern Argentina and Paraguay. However, there have been sightings from as far north as Honduras, and fossil records show the species formerly occurred as far north as Kansas in the United States. It is found in a variety of forested wetland habitats, particularly swamps and along the edges of rivers and lakes, at altitudes up to 500 m (1,600 ft).
The green ibis is largely crepuscular. Less gregarious than its relatives, it is usually seen alone or in pairs. When it does forage in mixed-species flocks, it tends to remain on the fringes, usually among other green ibises. It regularly perches in trees.
Like other ibises, it eats fish, frogs and other water creatures, as well as insects.
Its nest is a flimsy platform of twigs built high in a tree. It has been recorded harassing sunbitterns nesting in the same tree.
Because of its huge range and large population, the green ibis is rated as a species of least concern by the International Union for Conservation of Nature; however, its numbers do appear to be decreasing. It is at least occasionally hunted (and eaten) by residents of Central and South American countries.
The crested caracara is known to prey on green ibis, with a pair observed chasing and attacking one in flight, driving it to the ground. They killed it by pecking it repeatedly on the head. The green ibis is the type host of a species of bird louse, Plegadiphalus cayennensis.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...