Lower Adur Valley, West Sussex

July 2019

Hay meadow on the levels below Mill Hill
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Reports by Andy Horton from personal observation unless otherwise indicated
Clicking on the new thumbnail-style images will reveal a larger photograph

2019 Regional

Adur Coastal & Marine
Adur Estuary & Levels
Mill Hill & the Downs
Urban Reports
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29 July 2019

Brimstone Butterfly

Ten species of butterfly showed on the top of a sunny Mill Hill. Gatekeepers were the most prevalent, and the Brimstones were attracted to Wild Basil.
Butterfly List

The pale female Brimstones actually look white in flight with pale green undersides seen on the rare occasions when they settle or visit flowers. This in contrast to the brighter yellow of the males.

28 July 2019


There were seven species of butterfly on a cloudy and breezy Mill Hill. Most were hiding including the frequent male Chalkhill Blues.
Butterfly Report

23 July 2019
England and Sussex bathed in an exceptional heatwave with with an air temperature of 30.2 °C at  6:00 pm, definitely the highest recorded at Shoreham-by-Sea this millennium. The air temperature reached its maximum at an astonishing 31.0 °C at 7:00 pm.
Met Office (Shoreham)
Shoreham Weather Report

16 July 2019
It is remarkable that in the middle of July a different set of flowers become dominant on the levels and Mill Hill. On the lower slopes of Mill Hill, the Dwarf Thistle was a first arrival for 2019, Round-headed Rampion seen for the first time this summer, and the Musk Thistle was only noted for the first time this year. Green shoots of Carline Thistle appeared.

Chalkhill Blue Butterfly

Thirteen species of butterfly were seen on Mill Hill including about a dozen freshly emerged male Chalkhill Blues.
Full Butterfly Report

Two pods of dolphins were seen off Widewater beach, Lancing just before sunset (8.30 pm). The first pod of four to six dolphins were seen feeding three or four miles out from the western end of Widewater and travelling westwards. Simultaneously, another pod of four to six were seen to the south-east (east of the last wind turbine) breaching and swimming eastwards amongst the net marker buoys at the same distance from the shore. The sunset was followed by a Partial Lunar Eclipse that started about an hour later.

Dolphin Report by Mikey Unsted

14 July 2019
A stunning male Banded Demoiselle (a damselfly), Calopteryx splendens, fluttered (like a butterfly) over the Chicory road verge at Erringham Gap. It stopped five times amongst the long grass and tall vegetation for less than a second each time and then disappeared.
Adur Dragons and Damsels 2019

9 July 2019

Chalkhill Blue Butterfly

A first male Chalkhill Blue Butterfly of the summer flew around the lower slopes of Mill Hill, in the afternoon when the cloud allowed the sun to shine. All the couple of hundred butterflies seen on Mill Hill Nature Reserve were restless, with over a hundred Meadow Brown Butterflies mostly disturbed, over fifty hidden or restless Marbled Whites, frequent Gatekeepers, occasional  Large Whites, Small Heath Butterflies, and Red Admirals, a few each of Brimstone Butterflies, Peacocks, Small Skippers, Small Whites and one tatty and faded Painted Lady, and a Yellow Shell Moth

3 July 2019

Marbled White, Greater Knapweed with Knapweed Broomrape, Greater Knapweed
Meadow Scabious, Marjoram
Mill Hill Upper

Butterflies were common on the upper part of Mill Hill with scores of restless Marbled Whites and scores of hidden Meadow Brown Butterflies disturbed on a sunny afternoon, occasional Small Heath Butterflies, my first three Small Skippers of 2019 and a faded Painted Lady in the Bramble-covered meadow north of the top car park, occasional Large Whites, at least one Small White, occasional Gatekeepers, a faded and worn Small Tortoiseshell, and a few Cinnabar Moths and caterpillars. Most of butterflies inhabited the areas of mixed long grasses, Bedstraws and Greater Knapweed.
Illustrated Butterfly Report

2 July 2019

Wild Basil, Great Willowherb, Marjoram
Self-heal, Perforate St. John's Wort
Mill Hill

Summer turned towards autumn with the hay meadow on the levels below Mill Hill harvested and the hay baled. I recorded my first two Gatekeepers (butterfly) of the summer amongst the scrub on Mill Hill, with frequent restless Marble Whites, frequent Meadow Brown Butterflies, frequent Small Heath Butterflies, one Brimstone Butterfly and a Red Admiral, a few Large Whites, one faded Painted Lady and a few Cinnabar Moths.
Full Report

Coastal and Marine Reports 2019
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Adur Nature Notes 2013

Adur Butterfly List 2019
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Adur Nature Notes 2015
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Link to Adur Valley Nature Notes 2003Latest Nature Notes                      and Index page 2002
Mill Hill, north of Shoreham


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