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The Birds of Berkshire Annual Report 2016 Published 2019 Berkshire Ornithological Club Registered charity no. 1011776 The Berkshire Ornithological Club (BOC) was founded as Reading Ornithological Club in 1947 to promote education and study of wild birds, their habitats and their conservation, initially in the Reading area but now on a county wide basis. It is affiliated to the British Trust for Ornithology (BTO). Membership is open to anyone interested in birds and bird-watching, beginner or expert, local patch enthusiast or international twitcher. The Club provides the following in return for a modest annual subscription: • A programme of indoor meetings with • Conservation involvement in important local expert speakers on ornithological subjects habitats and species. BOC members are involved in practical conservation work with • Occasional social meetings groups such as Friends of Lavell’s Lake, • An annual photographic competition of very Theale Area Bird Conservation Group and high standard Moor Green Lakes Group. • A programme of field meetings both locally • Opportunities to participate in survey and further afield. These can be for half work to help understand birds better. The days, whole days or weekends. surveys include supporting the BTO in its work and monitoring for local conservation • Regular mid week bird walks in and around management. many of Berkshire’s and neighbouring counties’ best birdwatching areas. • The Club runs the Birds of Berkshire Conservation Fund to support local bird • Exclusive access to the pre-eminent site conservation projects. Queen Mother Reservoir (subject to permit) This Berkshire Bird Report is published by the Club and provided free to members. Members are encouraged to keep records of their local observations and submit them, electronically or in writing, to the Recorder for collation and analysis. The informative and fully illustrated County Atlas and Avifauna, The Birds of Berkshire, published in 2013, can be purchased at www. berkshirebirdatlas.org.uk, price £35, and is available to members at meetings at the discounted price of £30. For further details of the Club and membership visit www.berksoc.org.uk or contact the Hon. Secretary: Sally Wearing, 9 Deans Farm, The Causeway, Caversham, Reading, RG4 5JZ telephone 0118 946 3125; e-mail [email protected] The Birds of Berkshire Annual Report for 2016 Contents Page Introduction and acknowledgements . 4 Submitting records . 5 Articles Birding Highlights of 2016 by Ken Moore . 6 Ground-nesting Bird Survey Greenham and Crookham Common 2016 by Adrian Hickman . 9 Berkshire Breeding Water Rail Survey 2016–18 by Renton Righelato . 16 Monitoring of Annex 1 species on the Thames Basin Heaths SPA between Bracknell and Camberley by Patrick Crowley, Chris Gent, Bill Nicoll, Ted Rogers and Des Sussex . 33 From the Archives: Black-winged Pratincole by Richard Burness . 37 Finder’s Report: Leach’s Petrel by Andy Tomczynski . 38 Finder’s Report: Sabine’s Gull by Andy Tomczynski . 39 The Berkshire Bird Index 2016 by Renton Righelato . 40 25 Years of The Berkshire Bird Index by Renton Righelato . 42 Weather Summary for 2016 by Renton Righelato . 43 Dragonflies and Damselflies by Mike Turton . 44 Bird Report for 2016 Report for 2016 by the Berkshire Records Committee . 46 Systematic List by Richard Burness . 50 Non-native species and hybrids by Ken Moore . 147 First and last dates of selected migrants by Ken Moore . 149 County maps Topographical areas . 150 Some birdwatching sites in Berkshire . 152 Contributors to the Systematic List . 154 County Directory . 157 Bird-watchers’ Code of Behaviour . 158 Edited by Richard Burness and Renton Righelato Published in 2019 by BERKSHIRE ORNITHOLOGICAL CLUB © Berkshire Ornithological Club ISBN 978–0–9553497–6–8 Price £7·50 Introduction The 2016 report has been compiled by Richard Burness, our County Recorder, who will take over as chair of the Editorial Board later this year . As well as editing the Systematic List, a scientific record of observations, he has put together an interesting and valuable set of articles and photographs, which we hope you will enjoy . With the county records database now available on the BOC website, there is less need to write accounts as lists of records and more opportunity for analysis and discussion, which I hope both writers and readers will find more interesting .We hope people will make use of this facility to carry out their own research and offer notes or articles for publication in these reports . One new searchable feature of the county records database that users might find helpful is the assignment of sites to topographical areas: swathes of broadly similar geology and habitat mix that can be used in analysing the distribution of records . A map showing the areas can be found on page 150 . In 2019, the Berkshire Ornithological Club published a guide to bird-watching sites in Berkshire, available from the Secretary of the Club and at Club meetings, price £6 (£5 to members) .There are also just a few copies left of The Birds of Berkshire Atlas and Avifauna (2nd edition 2013), which can be obtained from Brian Clews ([email protected]) . We hold small numbers of back copies of many of The Birds of Berkshire Annual Reports, which are available from the BOC Secretary in return for a small donation to the Club’s Conservation Fund . Acknowledgements The preparation of the County bird report relies on the voluntary efforts of many people for data collection, species account writing, preparing articles, providing photographs, editing and, critically, the observers who put in their records . At the end of this report is a list of the observers whose records contribute to the reports .We hope the list is accurate: please let us know of any errors or omissions, for which we apologise . We are particularly grateful to our County Recorder, Richard Burness, who has edited the Systematic List and to all the species account writers who are listed on page 50 . Our thanks also go to Patrick Cowley and colleagues for their report on the Thames Basin Heaths, to Richard Burness, Adrian Hickman, Ken Moore, Renton Righelato, Andy Tomczynski and Mike Turton, all of whom provided articles, and to the photographers who generously provided their excellent shots .Thanks also to Robert Gillmor for his beautiful cover print of the Great Egret and, as ever, to Rachel and Rob Still of Eye on the Ball for design and production of the report . Renton Righelato 4 SUBMITTING RECORDS Sending your records promptly and electronically will enable the County database to be kept complete and up to date .To facilitate review and report preparation, records may be sent throughout the year and anyway should be filed within three months of a year end . If you are unable to send your records electronically, we may be able to help: please contact the Recorder . Records can be entered on line at www.berksbirds.co.uk or sent by email to the Recorder [email protected] as an excel file or as a CSV file . Excel files should have the following eight columns in this order: Species, Site, Grid reference, Arrival date, Departure date, Number, Notes, Observer, Breeding status. Species: Required . If possible, please use the species name from BWP . Please do not use plurals . e .g . do not enter “Siskins” or “Canada Geese”, but “Siskin” or “Canada Goose” . Site: Required . If possible, please use the site names as used in these reports . Otherwise, please enter the site as the nearest landmark on an OS map and specify the grid reference in the “Grid reference” field . Sites such as “my garden”, “River Thames”, “3 miles east of Reading” or “by the A33” are examples of inappropriate site names . Grid reference: Four or six figure grid ref .The prefix, either “SU” or “TQ” should be included and there should be no spaces between characters . Grid references are only required for less well-known sites, or to give a very precise location within a large site . Arrival date: Required . In the format “dd/mm/yyyy” i .e . “01/01/2005” . For records that refer to more than one day enter the first date in this field and the last date in the “Departure date” field . Departure date: Optional . In the format “dd/mm/yyyy” e .g . “01/01/2005” . Number: Required .Whole number only . e .g .the following are not valid: “c10”, “10+”, “1–2”, “many” . Enter any quantifying information in the Notes field . Notes: Optional . Use the Notes field to enter information on age, sex, behaviour, breeding details etc . Any reference to other species made in this field will not be recorded for that species – please make a separate entry for each species . Breeding Status: Optional . Please use the BTO breeding evidence codes: http://www. bto.org/volunteer-surveys/birdatlas/methods/breeding-evidence . Observer: Required . Please enter your full name and include your middle names if you have any . .csv files should use the same eight fields separated by commas (whether or not they contain data) and note that any field containing a comma should be enclosed in double quotes .Thus, for example: Siskin,”Searles Lane, Burghfield”,03/02/2019,,10,Feeding in Alders,,MJT . Confidentiality: Confidential records should be sent separately but in the same format, and noted as confidential in the covering email .The locations of records for rare breeding species will, in any case, be held in confidence . Species requiring a description: Records of rarer species will be reviewed by the Berkshire Records Committee and may require a description or additional notes – please see the BRC report (page 46) . 5 BIRDING HIGHLIGHTS OF 2016 by Ken Moore JANUARY 2016: the first day of January had the possibly returning drake Smew of the past two winters at Moor Green Lakes, then a single Brent Goose at Lower Farm GP the following day .