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Bristol Naturalist News Contents / Diary of events SEPTEMBER 2018 Bristol Naturalist News Photo ©Lesley Cox Discover Your Natural World Bristol Naturalists’ Society BULLETIN NO. 573 SEPTEMBER 2018 BULLETIN NO. 573 SEPTEMBER 2018 Bristol Naturalists’ Society Discover Your Natural World Registered Charity No: 235494 www.bristolnats.org.uk ON RESIDENT H . P : Andrew Radford, Professor CONTENTS of Behavioural Ecology, Bristol University 3 Diary of Events HON. CHAIRMAN: Ray Barnett Editor’s Email change [email protected] HON. PROCEEDINGS RECEIVING EDITOR: 4 Society Lectures; Bee/Pollination Fest; Dee Holladay, [email protected] Future of the Bulletin; HON. SEC.: Lesley Cox 07786 437 528 5 BNS/Univ. programme; Phenology ; [email protected] HON. MEMBERSHIP SEC: Mrs. Margaret Fay 6 Newport Wetlands & Chris Packham 81 Cumberland Rd., BS1 6UG. 0117 921 4280 [email protected] Purple Sycamore Bristol Tree of the Year HON. TREASURER: Mary Jane Steer 01454 294371 [email protected] 7 Celebrating Brian Frost BULLETIN COPY DEADLINE: 7th of month before Natty News publication to the editor: David B Davies, 8 Welcome – new members 51a Dial Hill Rd., Clevedon, BS21 7EW. 01275 873167 [email protected] 9 BOTANY SECTION . Botanical notes Health & Safety on walks: Members participate at their own risk. They are 13 GEOLOGY SECTION responsible for being properly clothed and shod. Field trips; Festival; New Book Dogs may only be brought on a walk with prior agreement of the leader. 14 INVERTEBRATE SECTION Notes for September 15 LIBRARY 16 ORNITHOLOGY SECTION Winter birds survey; Meeting reports; 18 Recent News 19 MISCELLANY Botanic Garden Gorge & Downs Wildlife Project Avon Organic Gp. 20 Photos Cover picture: Taken by Lesley Cox at the BNS/University Pollinators meeting – report page 7 Bristol Naturalists’ Society Discover Your Natural World 2 Registered Charity No: 235494 www.bristolnats.org.uk Diary of events Back to contents Council usually meets on the first Wednesday of each month. If you plan to attend please check date & time with the Hon. Sec. (from whom minutes are available to members). Any member can attend, but must give advance notice if wishing to speak. Visitors & guests are welcome at any of our meetings. If contact details are given, please contact the leader beforehand, and make yourself known on arrival. We hope you will enjoy the meeting, and consider joining the Society. To join, visit https://bristolnats.org.uk and click on membership. Members are members of ALL the sections. SEPTEMBER 2018 Sat-Sun 1-2 BNS at Bee & Pollination Festival Society 10-5 page 4 Sat 8 Chew Valley Lake Ornithology 09:30 page 16 Sat 22 Whitebeams of the Clifton Side of the Gorge Botany 11:00 page 9 OCTOBER 2018 Sun 7 Sand Point Ornithology 10:00 page 16 Wed 10 Cirl Bunting of Labrador Bay Ornithology 19:30 page 16 Sun 14 Migration Watch Ornithology 07:30 page 16 Wed 17 Winter Lecture: Lost World of Jurassic Sea Lilies Society 19:30 page 4 OTHER ITEMS OF INTEREST All Sept. Mendip Rocks Festival page 13 Sat 1 Sep Dead Maids Quarry Bath Geol Soc. 10:00 page 13 Sat 15 Sep Stancombe Quarry open day 10 - 3 page 13 Sat 15 Sep Intro to plant propagation Botanic Garden 10:00 page 19 Sat-Sun 15-16 Sep ‘All about Trees’ workshops Botanic Garden 10:00 page 19 Thu 20 Sep Urban Gloucester GlosNats 10:30 page 9 Sat 22 Sep Paper Peony workshop Botanic Garden 10:00 page 19 Sun 23 Sep Shooting autumn pictures Botanic Garden 10:00 page 19 Editor’s email change The editor’s provider, which.net, will shortly cease to exist. His new (and only) email is: [email protected] 3 SOCIETY ITEMS SOCIETY Winter Lectures Contents / Diary REMINDER: Our Winter Lecture Programme re-opens next month with our Society or ‘general’ talks that cover all subjects of interest to naturalists from Elephants to Earwigs starting on Wednesday, 17th October. Please make a note in your diary. Bee and Pollination Festival 10:00 a.m. Saturday, 1st – 5:00 p.m. Sunday, 2nd September The BNS will be at the Bee and Pollination Festival again this year run by the University’s Botanic Garden. Apart from the Garden itself, which is well worth a visit, there will be talks, working hives, locally produced honey, artwork, interesting displays, fascinating people to talk to and even somewhere to get a cup of tea. The BNS gazebo will welcome all comers . If anyone would like to help by giving an hour or so of their time it would be greatly appreciated. Please get in touch if you can via, [email protected] Lesley Cox Note. Follow the clear parking signage to avoid the pop festival road diversions. THE BULLETIN: Your Thoughts On Change Contents / Diary Benjamin Franklin, the American polymath, a concept that was once not seen as a contradiction in terms, gave us the inimitable line, ‘In this world nothing can be said to be certain, except death and taxes’. Unfortunately, we at the BNS have to add a third factor, namely, rising costs. As members, you will know that the BNS has a prodigious output of quality publications encompassing; ten issues of the Bulletin per annum, which keeps members in touch with news of our activities, etc., plus a superb journal (Nature in Avon) with fresh, up to date, first hand, first class information about the natural world from local specialists, distributed in May, and the acclaimed Avon Bird Report documenting avian sightings, movement, numbers and much more, which arrives through members’ letter boxes towards the end of the year. However, unlike bigger, wealthier organisations and publicly funded groups, the Society only has its members’ fees to cover the printing and distribution expenses along with all the other costs of the activities and events we run, all of which are provided free to members. We do not want to compromise standards but printing has never been particularly cheap whilst postage seems to rise exponentially. Everyone in the BNS gives their time, energy and expertise gratis enabling the Society, so far, to produce quality publications on a shoestring. Now, with the very sad passing of our friend and colleague, Brian Frost, a new distribution system is required and with that the most apposite time for change presents itself. We do not yet know what those changes will be; Council will be discussing the matter at the meeting in September and will be looking at, for example, a lower frequency of distribution for the Bulletin and possibly encouraging more members to receive their Bulletins electronically. You, our members, are the most important resource our Society has, so if any members have any ideas or comments regarding this issue we should be delighted to hear from you. Please contact me with your thoughts and suggestions via, [email protected] Many thanks, Lesley 4 JOINT BNS / UNIVERSITY BIODIVERSITY PROGRAMME Field Meeting Report: Joint BNS/University Pollinators Meeting, Sunday, 24th June 2018. Eleven of us gathered despite the heat of Midsummer for a meeting led by a national expert whose breadth and depth of knowledge astounded all who had not previously joined him on a meeting and despite the hindrance of finding that the meadows we had enjoyed only three weeks before had been cut. Fortunately, there was still plenty to find amongst uncut margins, under trees, along the hedgerow shrubs and within the flower banks that also grace this site. The high degree of pleasure that we experienced was clearly expressed and underlined by all who attended. Here are some of the species we found. The cover photo was taken at the same meeting Contents / Diary Species List Aceria erinea – Walnut Leaf Gall Mite Pontania (Pontania) bridgmanii Anax imperator – Emperor Dragonfly Tenthredo (Tenthredo) scrophulariae – Figwort Sawfly Eriophyes tiliae Celypha lacunana - Common Marble Anacamptis pyramidalis - Pyramidal Orchid Chrysoteuchia culmella - Garden Grass-veneer Dactylorhiza fuchsia - Common Spotted-orchid Sideridis rivularis – Campion Juglans regia – Walnut Eurydema (Eurydema) oleracea - Cabbage Bug Agrypnus murinus Eysarcoris venustissimus - Woundwort Shield bug Cionus scrophulariae - Figwort Weevil Kleidocerys resedae - Birch Catkin Bug Coccinella septempunctata - 7-spot Ladybird Miris striatus - Fine Marbled Bugkin Harmonia axyridis - Harlequin Ladybird Pentatoma rufipes - Forest Bug Rutpela maculata Piezodorus lituratus - Gorse Shield bug Maniola jurtina - Meadow Brown Chloromyia Formosa - Broad Centurion Ochlodes sylvanus – Large Skipper Contarinia tiliarum Pararge aegeria - Speckled Wood Jaapiella veronicae Polygonia c-album – Comma Phytomyza ilicis - Holly Leaf Gall Fly Aphantopus hyperantus - Ringlet Scathophaga stercoraria Andricus aries Volucella bombylans Bombus hortorum - Small Garden Bumblebee Marchantia polymorpha - Common Liverwort Bombus hypnorum - Tree Bumblebee Sciurus carolinensis - Eastern Grey Squirrel Bombus lapidarius - Large Red-tailed Bumblebee Hylaeus (Hylaeus) communis - Common Yellow Face Bee Bombus pascuorum - Common Carder Bee Haematopota pluvialis - Notch-horned Cleg Bombus vestalis - Vestal Cuckoo Bee Lydina aenea Osmia (Chalcosmia) leaiana - Orange-vented Mason Bee Pachygaster atra - Dark-winged Black Lesley Cox PHENOLOGY Contents / Diary (Note: this is written at the start of August, and much may change by the time you read it). It has been a wholly exceptional summer. July had an average temperature of 26.2ºC, the same as 2013, and higher than 1976 which was 24.5ºC. June and July combined had an average of 24.5ºC, compared with the 30-year figure of 20.0ºC. The two months recorded a total of just 22 mm of rain, the driest ever recorded. 1921 and 1995 had 25mm, and the famous year of 1976 had 49mm. Sunshine hours averaged 8.6 hours a day, less than in 2013 and 2006, but 40% above normal. The plant response has been to aestivate, to shut down all activities where possible, and concentrate on keeping roots and food stores intact.
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