Hi Ed
Ypres itself has Black Redstarts on the ramparts and if you go out of the Lille Gate (Rijselstraat) there is open water there that usually has a selection of predictable water birds. If you cross the road over to the Zuidring there is an area of water than can be interesting depending on the time of year but you will need a scope if you don't have time to get closer. Ypres also serves one of the best pints of Belgian Stella that I have ever had, apart from the cost.
As one would expect most of the Cemeteries are amazingly quiet but lush and attract lots of birds, I visited the grave of the great poet and naturalist Edward Thomas and although it was a relatively small cemetery it had three species of woodpeckers and was full of birdsong.
The Somme has Harriers and again depending on the time of year has Golden Orioles, Serins and I had a Black Woodpecker. All of these birds and more are typical of Northern France & Belgium, however given that the cemeteries are quiet, peaceful and relatively undisturbed, they tend to attract more birds or maybe it is my imagination.
Don't know about Galilpoli, going later this year.
I was in Northern Greece/Macedonia recently and visited a British & Commonwealth Cemetery there, which had three species of Shrike, Bee-Eater, Roller, Hoopoe, Collared Flycatcher, Black Headed Bunting, Lesser Spotted Eagle etc etc.
best regards
Merlin