Tag Archives: Birds

The Raven

The Raven is North America’s largest perching bird. They are actually referred to as passerine birds, which mean they have distinguished feet that is adapted for perching.

The Raven is an Omnivore and known to be very effective hunters that make use of cooperation during hunting. Teams of ravens are known to have been able to hunt large animals in the wild. They can feed on smaller animals like rodents, insects and worms, as well as grains which make them omnivores.

A lot of times too, they feed on carrions – decaying flesh of dead animals, and human garbage; making them scavengers.

During their breeding seasons, ravens are seen displaying magnificent aerial skills. These displays are mostly mating rituals, involving dances, rolls and dives. They usually make croaking sounds, and other forms of sounds.

In the winter months, groups of ravens flock to search for food together during the day, and at night they roost. They are always in groups or in twos. Ravens are known to mate for life, especially during the remaining months of the year.

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When they begin to lay eggs, they make large nests with sticks; laying up to three to seven eggs. Because the ravens are always coupled, they take care of the young together. When the eggs hatch, they are dependent on their parents for several months.

The average life span of the raven is about 13 years, and could weigh up to 1.3 kg. The ravens are really sleek and remarkable birds and make for a beautiful sight when they are together in their flock.

Inca Cockatoo (Cacatua leadbeateri)

Did you know?

That while raising the chicks, the male Inca Cockatoo usually sits on the nest during the day and the female at night?

The Cacatua leadbeateri is a specie of smaller cockatoo, reaching a total length of 35 cm. It is the only cockatoo with a multi-color crest. The plumage of the crown, upper parts and tail are white. The narrow ridge is scarlet with a yellow center band and a white tip. The face and underparts are pink salmon and the undersides of the wings and underside of tail are deep salmon pink. The beak is rather small and white. Its feet are gray and the iris is dark brown in males, and pale red-brown for females.

The Inca Cockatoo usually travels in pairs or small flocks, often in conjunction with Cockatoos Galahs (Eolophus roseicapilla) or small blood Cockatoos (Cacatua sanguinea). Most of the day, they spend their time foraging on the ground or in trees.

The breeding season is from August to December. The birds nest in hollow trees, coated with dust and bits of rotten tree bark. The clutch usually consists of 2 to 4 eggs, which are incubated by both parents for 30 days. The chicks leave the nest at 6 to 8, weeks but remain with their parents as a family group. They feed on seeds, nuts, fruits, berries and roots. They drink early in the morning and evening.

Birds Migration Influenced by Climate Change

Climate change affects the behavior of traveling birds: geese, ducks and swans spend their winters in wetlands of northern Europe changes its habits of migration as temperatures rise.

British experts say, because many of the birds no longer migrate north to the south of the continent, the number of specimens of species once common as winter guests is now declining in the UK.

Researchers at the University of Helsinki conducted a study based on data provided by the Observatory of birds in Hanko, Finland. Here, since 1979, several volunteers have followed the birds daily, making a “census migration”.

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