WET  LAND  BIRDS

GOOSE:

      

Geese are waterfowl belonging to the tribe Anserini of the family Anatidae. This tribe comprises the genera Anser (the grey geese), Branta (the black geese) and Chen (the white geese). A number of other birds, mostly related to the shelducks, have "goose" as part of their name. More distantly related members of the Anatidae family are swans, most of which are larger than true geese, and ducks, which are smaller.

There are three living genera of true geese: Anser, grey geese, including the domesticated goose and the Swan Goose; Chen, white geese (often included in Anser); and Branta, black geese, such as the Canada goose.

Two genera of "geese" are only tentatively placed in the Anserinae; they may belong to the shelducks or form a subfamily on their own: Cereopsis, the Cape Barren Goose, and Cnemiornis, the prehistoric New Zealand Goose.

Either these or, more probably, the goose-like Coscoroba Swan is the closest living relative of the true geese.

Fossils of true geese are hard to assign to genus; all that can be said is that their fossil record, particularly in North America, is dense and comprehensively documents many different species of true geese that have been around since about 10 million years ago in the Miocene. The aptly named Anser atavus (meaning "Great-great-great-grandfather goose") from some 12 million years ago had even more plesiomorphies in common with swans. In addition, there are some goose-like birds known from subfossil remains found on the Hawaiian Islands.

Geese are monogamous, living in permanent pairs throughout the year; however, unlike most other permanently monogamous animals, they are territorial only during the short nesting season. Paired geese are more dominant and feed more, two factors that result in more young.

MALLARD:                                                     

Mallard

The mallard or wild duck (Anas platyrhynchos) is a dabbling duck which breeds throughout the temperate and subtropical Americas, Europe, Asia, and North Africa, and has been introduced to New Zealand and Australia.

The male birds (drakes) have a glossy green head and are grey on wings and belly, while the females have mainly brown-speckled plumage. Mallards live in wetlands, eat water plants and small animals, and are gregarious. This species is the ancestor of most breeds of domestic ducks.

The mallard is widely distributed across the Northern and Southern Hemisphere, North America from southern and central Alaska to Mexico, the Hawaiian Islands, and across Eurasia, from Iceland and southern Greenland and parts of Morocco (North Africa) in the west, Scandinavia to the north, and to Siberia, Japan, and China in the east, Australia and New Zealand in the Southern hemisphere. It is strongly migratory in the northern parts of its breeding range, and winters farther south. For example, in North America, it winters south to Mexico, but also regularly strays into Central America and the Caribbean between September and May.

The mallard inhabits a wide range of habitat and climates, from Arctic Tundra to subtropical regions. It is found in both fresh- and salt-water wetlands, including parks, small ponds, rivers, lakes and estuaries, as well as shallow inlets and open sea within sight of the coastline. Water depths of less than 1 metre (3.3 ft) are preferred, birds avoiding areas more than a few metres deep. They are attracted to bodies of water with aquatic vegetation.

The mallard is a medium-sized waterfowl species although is often slightly heavier than most other dabbling ducks.

RUDDY SHELDUCK:

    

At Slimbridge Wildfowl and Wetlands Centre, Gloucestershire

  

Gajoldoba, WB, India

 

The ruddy shelduck (Tadorna ferruginea) is a member of the duck, goose and swan family Anatidae. It is in the shelduck subfamily Tadorninae.

There are very small resident populations of this species in north west Africa and Ethiopia, but the main breeding area of this species is from southeast Europe across central Asia to Southeast Asia. These birds are mostly migratory, wintering in the Indian Subcontinent.

This is a bird of open country, and it will breed on cliffs, in burrows, tree holes or crevices distant from water, laying 6-16 creamy-white eggs, incubated for 30 days. The ruddy shelduck is usually found in pairs or small groups and rarely forms large flocks. However, moulting and wintering gatherings on chosen lakes or slow rivers can be very large.

 

 

 

SNIPE:                             

Snipe

A snipe is any of about 25 wading bird species in three genera in the family Scolopacidae. They are characterized by a very long, slender bill and crypsis plumage. The Gallinago snipes have a nearly worldwide distribution, the Lymnocryptes Jack Snipe is restricted to Asia and Europe and the Coenocorypha snipes are found only in the Outlying Islands of New Zealand. The three species of painted snipe are not closely related to the typical snipes, and are placed in their own family, the Rostratulidae.

Snipes search for invertebrates in the mud with a "sewing-machine" action of their long bills. The sensitivity of the bill, though to some extent noticeable in many sandpipers, is in snipes carried to an extreme by a number of filaments, belonging to the fifth pair of nerves, which run almost to the tip and open immediately under the soft cuticle in a series of cells. They give this portion of the surface of the premaxillaries, when exposed, a honeycomb-like appearance. Thus the bill becomes a most delicate organ of sensation, and by its means the bird, while probing for food, is at once able to distinguish the nature of the objects it encounters, though these are wholly out of sign.

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