On May 30, 1991, Gibraltar Post collaborated with WWF organization released the stamp series features protected bird species, such as : Black stork, Egyptian vulture, Barbary partridge, and Shag or European Shag . Alongside with the issuance of WWF stamps, Gibraltar Post issued the official FDC depicted coloured silhouette of all birds and have a post mark of WWF logo, Panda.
Black Stork
The Black Stork or Ciconia nigra is a large wading bird in the stork family Ciconiidae.This is a shy and wary species. It is seen in pairs or small flocks—in marshy areas, rivers or inland waters. The Black Stork feeds on amphibians and insects.
The Black Stork is a strong migrant, wintering in tropical Africa and India.The storks migrate from the middle of August to the end of September.The common route goes over Gibraltar.The Black Stork builds a stick nest high in trees.
Egyptian Vulture
Egyptian Vultures are widely distributed and may be found in Southern Europe, in Northern Africa, and in Western and South Asia. The adult plumage is white, with black flight feathers in the wings. The bill is slender and long and the tip of the upper mandible is hooked.
Their habitat is mainly in the dry plains and nest mainly in arid and rocky hill regions.Populations of this species have declined in the 20th Century and some isolated island forms are particularly endangered.
Barbary partridge
The Barbary Partridge (Alectoris barbara), is a gamebird in the pheasant family Phasianidae of the order Galliformes, gallinaceous birds.The Barbary Partridge is the national bird of Gibraltar.
