Showing posts with label gatwick wildlife day. Show all posts
Showing posts with label gatwick wildlife day. Show all posts

Thursday, 23 August 2018

Gatwick Wildlife Day 2018

The Gatwick Aviation Museum is a hidden gem of a place, containing an impressive collection of well-kept British aircraft manufactured between the 1940s and the 1970s. The main building is a large aircraft hangar located in a large field, north-west of Gatwick's runway.


The landscape here is made up of wetlands, hedgerows, mature English Oak trees and margins of long grass, which combined with a lack of human disturbance results in some excellent areas for wildlife. The site also has very few biological records, and as species listing helps us to build up a picture of the ecosystem health, this is an ideal location for our 5th annual wildlife recording event!

North West of the runway


The bioblitz area

Event kick-off: Friday 22nd June, 7pm

(One day after the summer solstice.)




On the second longest day of the year, there was plenty of time before sundown for the Gatwick Greenspace Partnership team to set up the recording base camp. We readied ourselves for a long evening of wildlife discovery, which involved brewing plenty of coffee and a bit of impromptu kazoo playing.

Aviation Museum pond

It was an incredibly warm summer evening with hardly a breeze. As the first guests arrived, our task was to put the overnight moth-trapping equipment out into the heart of the site. 


Next up was the setting of longworth traps (used for live capture of small mammals) which were placed out around the perimeter of the site. As the sun finally began to set at around 9.20pm, Martyn Cooke and Kevin Lerwill began the bat activity survey. 

Static bat recorder

Martyn's specialist bat recording software produced over 3000 sequences, and approximately 25,000 individual bat calls. Three species were positively identified; Common Pipistrelle, Soprano Pipistrelle and Noctule. Two species of Myotis bats were recorded, and noted as probable Bechstein's and Whiskered. A possible Leisler's bat flagged up, but was unfortunately the recording was quite poor.

Total bat species: 5

By the evening's end we had gathered many wildlife records of the nocturnal kind, including several species of amphibian, bats, spiders, and a very vocal Tawny Owl

Common Toad Bufo bufo

Common Frog Rana temporaria 
(Photo by Helen Cradduck)

Total amphibian species: 3

A beautifully polished Walnut Orb-weaver Nuctenea umbratica


Around midnight it was time to put the kazoos away and turn in for an ambitious attempt at getting some shut-eye next to an airfield. 



Saturday June 23rd: 6am


(Photo by Lucy Groves)

The sun popped up again much sooner than we would have liked, and the team was mobilized at 6am. The first task of the day was a bird survey, which involved walking the entire perimeter of the site, keeping a sharp eye out and listening for calls.



The areas of wet scrub proved very productive, and we were greeted by the sounds of Reed BuntingGoldfinch and Common Whitethroat. Along the mature hedgerows and Oak trees, the most vocal birds were Nuthatch and Song Thrush.

Common Buzzard Buteo buteo
(Photo by Helen Cradduck)

Total bird species (seen and heard): 32

After the birds, it was straight on to checking the small mammal traps, with local mammal expert Lucy Groves leading the group. We found 5 species of small mammal which we considered good going for a short survey; Wood Mouse, Yellow-necked Mouse, Bank Vole, Common Shrew and Pygmy Shrew.



Wood Mouse Apodemus sylvaticus 
(Photo by Lucy Groves)

Larger mammals which were also seen on site included Rabbit, Red Fox, Roe Deer, Grey Squirrel and Brown Rat.

Red Fox Vulpes vulpes 
(Photo by Helen Cradduck)

Total mammal species (not including bats): 12



After a quick breakfast and some fresh pots of coffee, next up was the moth trap reveal with Laurie Jackson and Bob Foreman leading the show. The overnight traps were emptied with every moth, large and small, closely examined for identification and then counted.

Elephant Hawk-moth Deilephila elpenor 
(Photo by Helen Cradduck)


We were looked on by the yellow-and-black caterpillars of the Cinnabar moth, making short work of the Common Ragwort growing nearby.

But the rarity of the day (which caused the most excitement in the mothers' world) was the Dotted Fan-foot Moth, a nationally scarce species...




Total moth species: 68

Late morning rolled in (along with a fresh lot of guests!) and we sent out the troops out with their sweep nets, chasing down the numerous invertebrates out on the wing and hiding up in tall vegetation.

Banded Demoiselle Calopteryx splendens
(Photo by Helen Cradduck)


Total dragonfly & damselfly species: 7

Vince Massimo carried out a survey around the perimeter of the site, giving our butterfly species list a boost. The most rewarding find for him was a Purple Hairstreak high up in the canopy of the oldest Oak Trees.


Large Skipper Ochlodes sylvanus 
(Photo by Vince Massimo)

Small Tortoiseshell Aglais urticae 
(Photo by Vince Massimo)

Total butterfly species: 17

Other invertebrate groups can be a great challenge to identify to species level, so we were lucky to have experts on site such as Peter Hodge who did a brilliant job of sorting out the beetles for us...

A species of Soldier Beetle - Cantharis rufa

Cantharis nigra

A tiny lacewing larvae



Labyrinth Spider Agelena labyrinthica


Total beetle species: 42
Total spider species: 7
Total fly species: 16

And not forgetting the plants and fungi, with specialists Nick Aplin, Clare Blencowe, Brad Scott and Arthur Hoare helping to cover these challenging groups...

Arthur Hoare in action




Marsh Thistle (Cirsium palustre)

Total vascular plant species: 59
Total lower plant species: 6
Total fungi species: 14


The final part of the day involved pond dipping for aquatic invertebrates. We are able to identify a few of the dragonfly nymphs and water bugs, as well as getting up close to the young frogs and newts.



Dragonfly nymph 
(Photo by Lucy Groves)

Newt larva
(Photo by Lucy Groves)

By the end of the day, at about 2pm we had our running total, but it didn't stop there with experts taking away notebooks and specimens for closer examination.

This was the total count at around 2pm

As of now, the grand total for the day stands at 323 species!

A huge thank you to Tom Simpson, Kevin Lerwill, Tamara Jewell, and to all of the volunteers and guests who attended on the day. A special thank you also to Ashley and Jon of the Gatwick Aviation Museum for allowing use of their excellent site and facilities.

The latest breakdown of group totals from Lois Mayhew at the Sussex Biodiversity Record Centre:
amphibian3
bird32
beetles42
flies16
moss and lichen6
plants59
moth68
butterfly17
earwig1
true bugs27
dragonfly7
hymenoptera6 (includes 1 gall)
isopod1
mollusc2
Grasshoppers and crickets3
mammals12
spider7
fungi/rust14
Total Species323
Total Records423

Tuesday, 28 June 2016

Gatwick Wildlife Recording Day 2016

At a new site along the Gatwick Stream, Land East of the Railway Line, under the friendly banners of the Sussex Wildlife Trust and Gatwick Greenspace, a merry band of water-proofed biological recorders were gathered.
    Events like these are a great way to bring together people from all backgrounds, abilities and interests, introducing them to their local wildlife. The bonus part is that we get a big boost to our data, in the form of a massive species list for the site!


The area underwent a massive change as part of a flood attenuation scheme in 2013; thousands of tons of soil were scooped out, creating a huge bowl with an area of around 18ha (44 acres). This was retained as meadow grassland and will function as a river floodplain during extreme flooding events.

Friday 17th - 8.30pm


After a slight downpour-delay, the action kicked off with surveys for small mammals...

A keen crew of mammal surveyors gathered to check the humane (longworth) traps in the misty evening...

(Photo by Helen Cradduck)

Our first find of the day... (Photo by Katherine Quinlan)

The longworth traps were mostly full... with slugs! They are very adept at getting stuck under the trigger bar, and the subsequent slug-release programme is a long and slimy business.

Wood Mouse (Apodemus sylvaticus
Photo by Lucy Groves

Fortunately, we did find 3 very cute, non-slimy Wood Mice.

(Photo by Helen Cradduck)


Martyn Cooke kindly led the next walk, introducing us to the bats of Gatwick. The cool mist meant perhaps fewer insects were on the wing, but that didn't stop intrepid Common Pipistrelle and Noctule bats putting on an aerial show...

Noctule Bat (Nyctalus noctula) heard on a bat box duet detector

An abundance of these strange Ghost Moths were fluttering up and down in the long grass, adding to the atmosphere (and food for the bats).

Ghost Moth (Hepialus humuli)

The rain started up again just as the batwalk came to a close. We covered up the moth traps, keeping their precious contents dry for the grand reveal the next morning...


Saturday 18th - 7.30am

The next morning dawned rain-free, and we started off the day with a well-rounded breakfast of date and chocolate flapjacks made by Katherine and magnificent pancakes cooked by Kevin...



Base camp was incredibly soggy underfoot, but Kevin pulled a blinder by getting up early to spread barrow loads of bark chip, absorbing the worst of it. The two Toms collected in moth traps, placed out kit to dry and started up the generators for the all-important round of hot brews.

Basecamp (photo by Lucy Groves)


7.30am: Small mammals and birds...


Basecamp was alive with bird song, and in a very short time Tom Forward had us picking out several species in just one spot, such as the highly rythmic, yet variable notes of the Song Thrush...

Gatwick Stream flood attenuation area and grasslands

Reed Bunting is a new species to this area since the re-landscaping of the Gatwick Stream; it has a sweet, unobtrusive song...

Our mammal traps showed success this morning, with several Wood Mice and Yellow-necked Mice in residence...

We collect data such as weight, sex and breeding condition before releasing

Along with another haul of slugs...

Lucy's new pal (Arion sp.)

In fact, we then got quite into the slugological (?!) side of things, as no reptiles were to be found under the damp refugia...

Leopard Slug (Limax maximus)

Can anyone confirm if this is Deroceras reticulatum ?

Our trail camera (which we placed out the night before, baited with old biscuits and breakfast cereal), picked up another common type of mammal. Sadly, the infrared trigger seemed to startle it and it was off like a shot...

The shy and retiring Thomas simpsonii,

Back to basecamp for a caffeine stop, then it was time for the moth-showdown! Uncovering the traps,  we had Bob Foreman (Sussex Biodiversity Records Centre) leading the species identification, while Josh Baum (Surrey Biodiversity Information Centre) entered the data into the iRecord app...


The following are just a small selection of what we caught...

Burnished Brass (Diachrysia chrysitis) (Photo by Helen Cradduck)

Elephant Hawkmoth (Deilephila elpenor), yup, that's a real moth! (Photo by Lucy Groves)

Pine Hawkmoth (Sphinx pinastri) - this massive moth is a new species for me! 
(Photo by Helen Cradduck)

Buff Ermine (Spilarctia luteum) female (Photo by Lucy Groves)

...and considering the ridiculously un-June-like weather, we bagged ourselves a good haul of species.

Next, we targeted day-flying invertebrates such as butterflies and dragonflies, which were not so much out on the wing, but instead could be spotted and sweep-netted from the long grass.

Common Blue butterfly (Polyommatus icarus)


Broad-bodied Chaser dragonfly (Libellula depressa
(Photo by Katherine Quinlan)

Josh impressed the masses by holding this male (therefore stingless)
White-tailed Bumblebee (Bombus lucorum)


Neoscona adianta is a beautiful and rather uncommon orb-weaving spider

I've just caught myself trying to identify different people's fingers from the pics... those are mine are above. Yuck - poor spidey!


We stumbled across the experienced fungi recorder, Nick Aplin scrabbling around in a small scrape. We thought he must have turned up an exciting new species... .


But it turns out he was just looking for a lost camera stand. A short time later, he had an impressive list of new fungi species for the site!


Our records for lichens at Gatwick have been a little on the sparse side, shall we say... So two other great additions to our day were lichenologist Simon Davey and bryophytologist (?!) Brad Scott, purveyors of the tiny world of micro-greenery.


Various recorders-of-the-future were in attendance, including recent ecology graduates, environmental and ecology students, local volunteers and a couple of the Gatwick Greenspace Youth Rangers. 


It's always uplifting to have fresh eyes and ears along; future recorders, we salute you! 

Rosie Daines, an Environmental placement student at Gatwick Airport, 
with colleagues Troy and Tom Simpson

The afternoon finally unveiled the sun, and we headed over to the wildflower meadows, west of the Gatwick Stream. This site looks stunning now, full of nectar and pollen-rich plants for a fantastic diversity of invertebrates.


Oxeye Daisies were in abundance, along with a rich mix of trefoils, clovers, vetches, vetchlings and tares...

Meadow Vetchling (Lathyrus pratensis)

Grass Vetchling (Lathyrus nissolia)

Arthur Hoare is our botanical Yoda, opening our eyes about to the light-and-dark-sides of conservation grassland seeding. A gentle teacher, who's invaluable botanical knowledge provided us with a comprehensive plant species list -  thank you again Arthur!


All great days must come to an end, and just before packing up we tallied the species count so far...


There are still plenty of records to add to these lists, once the various specimens and photographs have had closer examination.


A huge thank you to all who helped us to set up and run these events, and thanks again to everyone for your bravado in the face of most unpredictable wet weather I've ever experienced. We are already looking forward to next year!