If you understand a little german, my website might be of much value to you:
http://stickbugdiver.jimdo.com/mein...ok-wohldorfer-wald/beobachtungsmöglichkeiten/
Otherwise I'll try to give you some tips were to go, but I think the information on my website have more detail.
First there's the Wohldorfer Wald. It doesn't really matter where exactly you walk, since at this time of year you can expect all the interesting species pretty much everywhere. There's lots of Middle Spotted and Green Woodpeckers, an occasional Black Woodpecker and in the more swampy areas Little Spotteds. Also a single Grey-headed WP is being seen and heard during the last five years or so. At the Kupferteich there are very high chances for Goldeneye, Whooper Swan and Grey Wagtail. Near the information center at Duvenstedter Triftweg chances are high for Hawfinch and Yellowhammer. In summer there are several goodies like Hobby or Red-backed Shrike to be found, but at this time of year, not many uncommon species are to be expected. Maybe a Black WP or a Great Grey Shrike... At the Mühlenteich in the south you may find lots of migrating ducks, especially Teal, Gadwall and maybe some Shovelers. Grey Wagtails are pretty common here as are migrating White Wagtails and sometimes Pipits. On the little lake further down the road Little Grebe and Merganser are common, a kingfisher may shoot by.
If you walk to the cemetary there's normally a Tawny Owl roosting in the chimney and in the conifers Crested and Coal Tits, Goldcrests, Pine Siskins and Crossbills can be found. In the broadleaf trees Stock Dove and Middle Spotted WP are common, here's the best place to search for the Grey-headed WP.
Then you can walk into the Duvenstedter Brook. Along the way many common songbirds can be heard singing and often Fallow Deer, sometimes even Boar and Red Deer hang out. Further in there's a little pond with few birds, but loads of frogs, ringed snakes and newts, aswell as butterflies and fireflies. If its a sunny day some songbirds will come down and take a bath in the pond, not rarely seen are Willow Tit, Blackcap and Willow Warbler. The observation deck behind rarely yields something of interest. If you are very lucky a Water Rail might scramble into sight, otherwise Gadwall and Little Grebe breed here and a few reed-songbirds. You may go further along the way and find different types of habitats. In the forests woodpeckers are common, in the marshes you'll see Stonechat and Marsh Harrier and on the meadows Cranes will be dancing their mating dance. Red Kites and Storks may be around and looking in the direction of the "Großes Moor" (big swamp) WT eagle is an almost sure sight, aswell as more Marsh Harriers, Cranes and some mammals. Around this time of year you should also look for Rough-legged Buzzards and Hen Harriers. One last spot you may not want to miss is outside of the Brook itself again. It's a meadow near the village of Wiemerskamp (nr.12 on my website). Here you'll probably find a pair of Crane, Stonechats aswell as migrating Wheatears. Sometimes even storks and often BOPs are around.
If you came later in the year (around May) you'd find many, many more songbirds in this beautiful place. There are such goodies as Red-breasted Flycatcher, Corncrake, Quail, Honey-Buzzard, lots of songbirds like Oriole and River Warbler. If you stay long enough in the evening you have good chances to hear or even see an Eagle-Owl, especially in the western parts of the Brook.
Otherwise I can only recommend the Wedeler Marsch in the west of Hamburg. Here you'll see thousands and thousands of Barnacle Geese, aswell as lots of waders, ducks, and migrating songbirds. It's also extremely productive for rarities like Red-breasted Geese or rare waders
Good luck in the most beautiful town in the world
Cheers Maffong
