Scary high numbers above already, but I've decided I'll join too!
Mammals:
1) European rabbit, Oryctolagus cuniculus
2) House mouse, Mus musculus
Birds:
3) Grey heron, Ardea cinerea
4) Black-crowned night heron, Nycticorax nycticorax
5) White stork, Ciconia ciconia
6) Canada goose, Branta canadensis
7) Mute swan, Cygnus olor
8) Egyptian goose, Alopochen aegyptiaca
9) Mallard, Anas platyrhynchos
10) Common moorhen, Gallinula chloropus
11) Eurasian coot, Fulica atra
12) Eurasian oystercatcher, Haematopus ostralegus
13) Herring gull, Larus argentatus
14) Mew gull, Larus canus
15) Black-headed gull, Chroicocephalus ridibundus
16) Rock dove, Columba livia
17) Common wood pigeon, Columba palumbus
18) Eurasian collared pigeon, Streptopelia decaocto
19) Winter wren, Troglodytes troglodytes
20) Common blackbird, Turdus merula
21) Song thrush, Turdus philomelos
22) Blue tit, Cyanistes caeruleus
23) Great tit, Parus major
24) Carrion crow, Corvus corone
25) Jackdaw, Corvus monedula
26) Common magpie, Pica pica
27) Common starling, Sturnus vulgaris
28) House sparrow, Passer domesticus
Just what I've seen throughout several train/car trips throughout Belgium and Netherlands, and in my own backyard!
