Here is the list of birds present during the breeding season this year (2004) in Banjicka Forest in Belgrade.
Pheasant
Mallard
Sparrowhawk
Woodpigeon
Greater Spotted Woodpecker
Green Woodpecker
Blackcap
Blackbird
Robin
Nightingale
Wren
Great Tit
Jay
Black-billed Magpie
Hooded Crow
Species I haven't observed this year, but observed in years before during the breeding season:
Collared Dove (on a forest glade)
Tawny Owl (calling)
Sedge Warbler (in reeds by the stream)
Song Thrush
Redstart
Blue Tit
Marsh Tit
Long-tailed Tit
Wood Nuthatch
Short-toed Treecreeper
Chaffinch
Pheasant
Mallard
Sparrowhawk
Woodpigeon
Greater Spotted Woodpecker
Green Woodpecker
Blackcap
Blackbird
Robin
Nightingale
Wren
Great Tit
Jay
Black-billed Magpie
Hooded Crow
Species I haven't observed this year, but observed in years before during the breeding season:
Collared Dove (on a forest glade)
Tawny Owl (calling)
Sedge Warbler (in reeds by the stream)
Song Thrush
Redstart
Blue Tit
Marsh Tit
Long-tailed Tit
Wood Nuthatch
Short-toed Treecreeper
Chaffinch