US social scientist Kenneth Boulding : ‘If you believe exponential growth can go on in a finite world, you are either a madman or an economist’.

Saturday, 17 July 2010

17/7/10: Lee Valley Park, Amwell - more 'firsts' in Odonata and plants

Up at half past six (groan) to get to St. Margaret's station in Hertfordshire for a London Natural History Society field trip to Amwell in the Lee Valley Park.

Several Skullcap along the canal further confirmed this species' prediliction for such habitats. There was a bit of Help Agrimony and Brandybottle (Nuphar lutea).

Other plants included a first for me - Small Teasel (Dipsacus pilosus), pictured below, of which there were quite a number, also the waterlily Nymphaea alba, a couple of Common Fleabane, a couple of Musk Mallow and a nice patch of Tufted Vetch.

Small Teasel (Dipsacus pilosus), Amwell, Hertfordshire

Butterflies seen around the canal, gravel pits and reserve were:

Green-veined White

Large White

Small White

A few Red Admiral

Speckled Wood


Meadow Brown

A single Ringlet

A single Common Blue

Odonata seen were:

Common Blue Damselfly (large numbers)

Azure Damselfly

Several Large Red-eyed Damselfly on water lily pads

A single Small Red-eyed Damselfly ditto (first time I've seen this species - thanks to sharp-eyed leader Roy Woodward for clocking this and getting his telescope on it for us)

Male and female Banded Demoiselles

Several Brown Hawkers

A few Emperor Dragonfly

1 x Four-spotted Chaser Dragonfly (first time I've seen this species)

Birds included:

Close views of a juvenile Green Woodpecker

A Kingfisher

2 Little Egret

Greylag geese

Common Tern

3 Buzzards circling together high overhead

2 Hobby dashing about over distant woodland

1 Kestrel

Great Crested Grebe

A Reed Warbler feeding 2 fledglings

3 Goldfinches feeding on Creeping Thistle seeds

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