Birdwatching is an extraordinarily delicate art. "What have you got?" I enquire gingerly of the two men stood stock still before me with their cameras rigidly poised and pointing straight at a rather ordinary looking hedge.
"A wren" says Oscar, the younger of the two, as he nurses the longest camera lens I've ever seen on it's Manfrotto tripod cradle, waiting avidly to snap that single elusive glimpse...
Suddenly a tiny brown bird pokes out of the bush and is caught in an instant, close up and beautiful in the sunlight. Extraordinary how something so everyday and unnoticeable becomes a work of art at the tiniest click of a button.
Indeed he's right. The wetlands are only a short hop away from central London, six miles from the post-office tower in fact.
Oscar tells me that Bitterns don't breed here in the UK, and that there might be more of them this year were it not for the fact that we've suffered as bad a winter here as anywhere else in Europe. Though they mostly breed in Northern Europe.
"We had some Lesser Red Polls" says Gary, "...and a Woodcock, a little bit of a rarity. In fact I've seen it three or four times over the last couple of weeks. Then there's the usual Fieldfare, Redwings and so on.., migrating birds from eastern Europe. Goldfinches, Chiff-Chaffs, Reed Buntings. I saw a curlew a few weeks back.
I thank him and make my way up to the Peacock tower, the main observation hide which overlooks the majority of the wetlands and corner a volunteer worker who fills me in on the details.
"The centre's been here for about ten years," he begins, "It was constructed with funding by Thames Water and Barclay homes and the wetland trust together."
"We depend on charity and sponsorship and money from membership to keep us going. This is an SSSI of course (a site of special scientific interest). When we opened we registered about 120 species of birds but that has gone up to about 150 species now".
I ask him what kind of rare birds they get to the wetlands: "Last year we had a Purple Heron and a Night Heron. Egrets, and even Avocets" he replies excitedly. "The Avocets bred in fact, but unfortunately the heron ate all their chicks one by one."
"We get kites, harriers, even an Osprey stayed here for about half an hour before it was mobbed off by crows, sometimes the gulls fight them off too. It's their profile you see. Ospreys only eat fish, but they look like hawks, so it's instinctive, the crows and gulls think they're predators."
The centre employs about 30 regular paid staff, and about 180 volunteers come to dig trenches, guide tourists and generally help out. Two years ago they welcomed over 190,000 visitors, so for all the solitude and quietness here, it's still a great attraction.
There are 7 other wetlands in the UK, but this is the only one in London, and the importance of this environmental refuge cannot be overstated, especially as the centre functions as an information hub were representatives from other cities, (recently Tokyo and Sydney) come to examine how they can set up similar wildlife preserves in otherwise urbanised areas.
Tally at the end of the day:
2 Shelduck,
17 Snipe
2 Cetti's Warblers
1 Water Pipit
3 Fieldfare
1 Bittern
1 Kingfisher
60 Redwing
179 Teal
1 Peregrine
1 Woodcock
1 Chiff Chall



