Saturday, 11 February 2012

Bird of Prey from Hutovo Blato

On the first of November 2008 ,  B & H Croatian Post Mostar of Bosnia and Herzegovina issued the stamp set feature bird of Prey from Nature Reserve Hutovo Blato. The issue depicted Northern Goshawk, Kestrel, Eagle Owl, and the Short-toed Snake Eagle.
Hutovo Blato is a nature reserve and bird reserve located in Bosnia and Herzegovina, 30 km from City of Mostar and near the Croatian border. It is stretches over an area of about 7,411 ha and  primarily composed of marshlands that were created by the underground aquifer system of the Krupa River. It is fed from the limestone massif of Ostrvo that divides the Deransko Lake and Svitavsko Lake
The Northern Goshawk is the largest member of the genus Accipiter. It is a raptor with short, broad wings and a long tail, both adaptations to manoeuvring through trees in the forests it lives and nests in.The Northern Goshawk, like all accipiters, exhibits sexual dimorphism, where females are significantly larger than males.The Northern Goshawk / Accipiter gentilis, is a medium-large bird of prey in the family Accipitridae, which also includes other diurnal raptors, such as eagles, buzzards and harriers.

The Eurasian Eagle owl (Bubo bubo) is the heaviest owl in the world.The feathers on the upper portion of the owl are brown to black and yellowish brown. The back and sides of the neck exhibit a striping pattern, while the head and forehead have heavy freckling. The plumage on the back has dark patches. The outer portion of the facial disc appears framed with black-brown spotting. The tail is dark with blackish brown barring. The assemblage of the feathers allows this owl to have noiseless flight

Kestrels are most easily distinguished by their typical hunting behavior which is to hover at a height of around 10–20 meters over open country and swoop down on prey, usually small mammals, lizards or large insects.In addition, kestrels are notable for usually having much brown in their plumage.Kestrels are bold and have adapted well to human encroachment, nesting in buildings and hunting by major roads.

The Short-toed Snake Eagle is found in open cultivated plains, arid stony deciduous scrub areas and foothills and semi-desert areas. It requires trees for nesting. When breeding it lays only one egg, but can live up to 17 years.
The Short-toed Snake Eagle has suffered a steep decline in numbers and range in Europe and is now rare and still decreasing in several countries due to changes in agriculture and land-use.

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