Syrian Woodpecker (Dendrocopos syriacus) perched on tree by entrance to nest, Bulgaria

tree horizontals trees bulgaria birds bird animals picidae eastern european east nest horizontal wildlife eastern europe woodpecker bulgarian east europe breeding bird piciformes east european vertebrate home dendrocopos developed country hole bark tree europe vertebrates eastern nature entrance by woodpeckers aves piciformes nests zoology syrian developed countries syriacus european homes europe animal