In the Struma River valley passes Via Aristotelis - the second most important migration route for wild birds in Bulgaria. Each spring from early March to June pass over 200 species of birds on their way to nesting sites. Many of them stop for short or remain to nest in various habitats. Among them, are Short-toed Eagle, Sardinian Warbler, Black-winged Stilt and Corn Bunting.
Short-toed Eagle is found in sparse deciduous and coniferous forests often near open fields, pastures and meadows. It nests in trees, mostly deciduous. It feeds mainly on snakes, lizards and frogs, rarely small mammals and insects.
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| Short-toed Eagle |
Sardinian Warbler inhabits dry areas with bushes south of the Kresna gorge,
preferring to feed small insects.
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| Sardinian Warbler |
Black-winged
Stilt was seen repeatedly during
spring and autumn migration in the Struma river
valley in the river spills, marshes and fishponds.
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| Black-winged Stilt |
Corn Bunting is one
of the key indicators to be used
as an index of the state of
the environment in rural areas. This
is possible because it is
extremely sensitive to changes in habitat and intensification in agriculture.
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| Corn Bunting |
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