Black-headed Gull

Chroicocephalus ridibundus

 

 

SP81W - Buckland (21.50) SP81S - Draytonmead Farm () SP81X - Long Marston (3.25) SP81T - Thistlebrook Farm (11.75) SP81Y - Alnwick Farm () SP81Z - Crafton () SP90V - Meadhams Farm (22.50) SP90W - Orchard Leigh (17.00) SP90X - Whelpley Hill Farm () SP90I - Cholesbury () SP90N - Hawridge Common () SP90T - Hockeridge Wood (0.25) SP90Y - Berkhamsted S () SP90E - Spencersgreen () SP90J - Hastoe (4.00) SP90P - Champneys (3.50) SP90U - Northchurch (25.50) SP90Z - Berkhamsted N (21.25) SP91A - Tring W (54.50) SP91F - Tring E (1.50) SP91K - New Ground (14.25) SP91Q - Norcott Hill (3.00) SP91V - Berkhamsted Common (0.67) SP91B - Little Tring (74.00) SP91G - New Mill (52.00) SP91L - Aldbury Nowers (39.25) SP91R - Aldbury (7.50) SP91W - Little Gaddesden (3.75) SP91C - Wilstone (6.75) SP91H - College Lake (15.00) SP91M - Pitstone Hill (60.25) SP91X - Ringshall (12.00) SP91D - West End Farm (2.50) SP91E - Mentmore (0.25) TL00A - Flaunden (8.50) TL00F - Belsize (1.00) TL00K - Chipperfield () TL00Q - Berrybushes Wood (52.00) TL00V - Abbots Langley (3.75) TL00B - Bovingdon (11.67) TL00G - Bulstrode (14.00) TL00L - Whippendell Bottom () TL00R - Kings Langley (49.25) TL00W - Bedmond (11.00) TL00C - Bovingdon Airfield () TL00H - Westbrook Hay (2.50) TL00M - Apsley (13.50) TL00S - Nash Mills (6.25) TL00X - Pimlico (2.00) TL00D - Broadway Farm (13.75) TL00I - Chaulden (5.25) TL00N - Hemel Hempstead (32.25) TL00T - Adeyfield (8.25) TL00Y - Leverstock Green (9.25) TL00E - Potten End () TL00J - Boxted Farm (1.00) TL00P - Gadebridge (37.50) TL00U - Grovehill (18.50) TL00Z - Buncefield (0.75) TL01A - Nettleden () TL01F - Great Gaddesden (1.50) TL01K - Briden's Camp (0.25) TL01Q - Easbrookhay Farm (1.00) TL01V - The Aubreys (0.50) TL01B - Hudnall () TL01G - Widmore Farm (7.75) TL01L - Gaddesden Row () TL01R - Puddephat's Farm () TL01W - Rabbitfield Spring (125.00) TL01C - Studhamhall Farm () TL01H - Clement's End () TL01M - Beechwood House (0.50) TL01S - Flamstead (1.25) TL01X - Friar's Wash (1.25) TL01I - Dedmansey Wood (0.75) TL01N - Markyate W (1.50) TL01T - Markyate E () TL01Y - Pepsal End (0.50) TL01P - Kensworth Lynch () TL01U - Caddington () TL01Z - Slip End (23.50) TL02Y - Galley Hill (16.25) TL02Z - Barton Hill Farm (60.00) TL03V - Barton-le-Clay (5.75) TL10A - Kingswood (104.75) TL10F - Bricket Wood Common (21.50) TL10K - Netherwylde Farm () TL10Q - Harperbury () TL10V - Shenley () TL10B - M25 Junction 21 (3.75) TL10G - Blackgreen Wood (7.00) TL10L - Frogmore (5.50) TL10R - Broad Colney (5.75) TL10W - Salisbury Hall (49.75) TL10C - Potters Crouch (13.25) TL10H - Chiswell Green (2.00) TL10M - St Julians (5.50) TL10S - London Colney N (32.00) TL10X - Tyttenhanger (87.00) TL10D - Gorhambury () TL10I - Praewood Farm (85.00) TL10N - St Albans (7.75) TL10T - Fleetville (3.50) TL10Y - Smallford (77.50) TL10E - Hogg End () TL10J - Batchwood Hall (25.00) TL10P - New Greens and Townsend (13.00) TL10U - Marshalswick (7.50) TL10Z - Beech Farm (34.00) TL11A - Beaumont Hall (26.75) TL11F - Hedge's Farm (23.50) TL11K - Cheapside Farm (1.25) TL11Q - Sandridge (13.00) TL11V - Symonshyde Great Wood (6.00) TL11B - Harpendenbury (9.00) TL11G - Hatching Green (6.75) TL11L - Harpenden SE (8.50) TL11R - Nomansland (18.50) TL11W - Coleman Green () TL11C - Faulkners End Farm (9.50) TL11H - Harpenden NW () TL11M - Batford (2.75) TL11S - Marshalls Heath () TL11X - Bride Hall () TL11D - West Hyde (4.75) TL11I - East Hyde (65.50) TL11N - Bower Heath (31.25) TL11T - Blackmore End (2.00) TL11Y - Ayot St Lawrence (6.75) TL11J - Chiltern Green (2.25) TL11P - Ansells End () TL11U - Kimpton () TL11Z - Kimpton Mill () TL12F - Luton Airport (19.75) TL12K - Diamond End (0.75) TL12Q - Bendish () TL12V - Whitwell () TL12B - Stopsley (16.75) TL12G - Tea Green (1.00) TL12L - The Heath (6.25) TL12R - Kingswalden Park (6.50) TL12W - Hitch Wood (1.00) TL12C - Butterfield Green (1.50) TL12H - Lilley Bottom (29.00) TL12M - Ley Green (1.50) TL12S - Preston () TL12X - Poynders End () TL12D - Lilley (5.25) TL12I - The Flints () TL12N - Great Offley (0.75) TL12T - Offleyholes Farm (4.33) TL12Y - Gosmore () TL12E - Telegraph Hill (1.67) TL12J - Little Offley () TL12P - Gravehill Plantation (2.25) TL12U - Hitchin SW (3.75) TL12Z - Hitchin Hill (14.50) TL13A - Hexton (26.00) TL13F - Tingley Wood (21.75) TL13K - Pirton () TL13Q - Oughtonhead Common (12.00) TL13V - Ickleford (44.50) TL13B - Higham Gobion () TL13G - Apsley End (11.00) TL13L - Burge End () TL13R - Holwell (15.75) TL13W - Ickleford Common (1.25) TL13S - Holwellbury (2.50) TL13X - Arlesey (12.25) TL20A - Ridge (3.25) TL20F - South Mimms (2.50) TL20K - Potters Bar (2.50) TL20Q - Five Acre Wood (14.25) TL20V - Barvin Park () TL20B - Redwell Wood Farm () TL20G - Royal Veterinary College (28.00) TL20L - Swanley Bar (17.75) TL20R - Queenswood (1.00) TL20W - Northaw (10.00) TL20C - North Mymms Park (1.00) TL20H - Welham Green (19.00) TL20M - Bell Bar (38.50) TL20S - Kentish Lane Farm (15.00) TL20X - Great Wood County Park (16.67) TL20D - Roehyde (3.00) TL20I - South Hatfield (13.25) TL20N - Woodside () TL20T - Wildhill () TL20Y - Little Berkhamsted () TL20E - Hatfield Aerodrome (15.50) TL20J - Birchwood (12.50) TL20P - Home Park (8.25) TL20U - Essendon (12.25) TL20Z - Howe Green (9.25) TL21A - Cromerhyde Farm (18.75) TL21F - Stanborough (72.00) TL21K - Hatfield Hyde (13.00) TL21Q - Holwell Court Farm (0.25) TL21V - Letty Green (3.75) TL21B - Brocket Park (26.00) TL21G - Sherrardspark (0.50) TL21L - Peartree (25.75) TL21R - Panshanger Aerodrome (3.50) TL21W - Panshanger Stables (12.00) TL21C - Ayot St Peter () TL21H - Digswell Park (2.50) TL21M - Digswell (90.00) TL21S - Tewin (46.00) TL21X - Bramfield (32.00) TL21D - Pulmer Water (42.25) TL21I - Welwyn (2.75) TL21N - Harmergreen Wood (26.50) TL21T - Bull's Green (13.50) TL21Y - Bramfield Woods () TL21E - Codicote (5.25) TL21J - Tagmore Green (21.50) TL21P - Woolmer Green (20.75) TL21U - Datchworth (0.75) TL21Z - Watkin's Hall Farm (10.25) TL22A - Rusling End (11.33) TL22F - Old Knebworth (1.75) TL22K - Knebworth (1.00) TL22Q - Bragbury End (28.25) TL22V - Frogmore Hall (0.75) TL22B - Langley Bottom () TL22G - Norton Green () TL22L - Broadwater (32.50) TL22R - Aston () TL22W - Benington Lordship (1.75) TL22C - Almshoe Bury (6.67) TL22H - Stevenage Old Town (5.50) TL22M - Pin Green (181.00) TL22S - Chells Manor (7.00) TL22X - Walkern Lodge (13.50) TL22D - Titmore Green (2.75) TL22I - Lister Hospital (2.25) TL22N - Chesfield Park (26.50) TL22T - Boxbury Farm (5.75) TL22Y - Walkern (15.00) TL22E - Great Wymondley (1.00) TL22J - Rowley Court (18.50) TL22P - Damask Green (0.25) TL22U - Hall's Green (1.25) TL22Z - Cromer (7.75) TL23A - Letchworth Hall Hotel (1.50) TL23F - Willian (10.00) TL23K - Lannock Manor (9.00) TL23Q - Weston (1.00) TL23V - Kingswoodbury () TL23B - Letchworth West (2.33) TL23G - Letchworth East (3.50) TL23L - Baldock (9.00) TL23R - Bird Hill (15.75) TL23W - Wallington () TL23C - Letchworth Sewage Works (10.33) TL23H - Norton and Radwell (4.33) TL23M - Bygrave Common (28.25) TL23S - The Firs (16.00) TL23X - Bygrave Lodge Farm (50.00) TL23I - A1(M) Junction 10 (22.75) TL23N - Newnham (6.67) TL23T - Bygrave (22.50) TL23Y - Slip End (27.50) TL23J - Caldecote (18.00) TL23P - Newnham Hill (9.00) TL23U - Ashwell (2.50) TL23Z - Ashwell and Morden Station (34.75) TL24F - Hinxworth () TL24K - Ashwell End (2.25) TL24Q - Cold Harbour (48.00) TL24V - Gatley () TL24L - Dunton Lodge Farm () TL24R - Guilden Morden S () TL24S - Guilden Morden N () TL30A - Cattlegate Farm (0.25) TL30F - Theobalds Manor (4.00) TL30K - Theobalds Park (39.25) TL30Q - Bowyers Water (143.00) TL30B - Cuffley (3.00) TL30G - Goff's Oak (24.50) TL30L - Flamstead End (34.00) TL30R - Seventy Acres Lake (69.25) TL30C - Newgate Street (0.75) TL30H - Hammond Street (23.75) TL30M - Wormleybury (33.50) TL30S - Turnford (23.75) TL30D - Blackfan Wood () TL30I - Cowheath Wood () TL30N - Carneles Green (18.50) TL30T - Broxbourne (2.00) TL30Y - Nazeing Mead (30.00) TL30E - Bayford (10.00) TL30J - Monks Green () TL30P - Goose Green () TL30U - Hoddesdon (32.00) TL30Z - Rye House Station (23.25) TL31A - Bayfordbury (7.00) TL31F - Brickendonbury (14.75) TL31K - Hertford Heath (9.67) TL31Q - St Margarets (53.75) TL31V - Stanstead Abbotts (54.75) TL31B - Hertford North Station (28.75) TL31G - Hertford (37.75) TL31L - Rush Green (35.75) TL31R - Great Amwell (28.50) TL31W - Little Briggens (40.75) TL31C - Waterford (6.75) TL31H - Ware Park Farm (10.25) TL31M - Ware (3.75) TL31S - Great Cozens (1.25) TL31X - Wareside (2.50) TL31D - Stapleford (1.50) TL31I - Tonwell (6.00) TL31N - Wadesmill () TL31T - Fabdens (5.00) TL31Y - Bakers End (3.75) TL31E - Watton at Stone (61.75) TL31J - Sacombe (2.50) TL31P - Sacombe Green (5.00) TL31U - High Cross (12.25) TL31Z - Barwick (1.00) TL32A - Whempstead (1.25) TL32F - Dane End (12.00) TL32K - Potter's Green (6.00) TL32Q - Colliers End () TL32V - Latchford (10.00) TL32B - Burn's Green () TL32G - Haultwick () TL32L - Levens Green (9.25) TL32R - Old Hall Green () TL32W - Standon () TL32C - Clay End () TL32H - Wood End (6.75) TL32M - Great Munden () TL32S - Hamels Park () TL32X - Braughing () TL32D - Ardeley () TL32I - Moor Green () TL32N - Whatbarn Farm (3.50) TL32T - Westmill (22.25) TL32Y - Dassels (8.75) TL32E - Bancroft Farm () TL32J - Cottered () TL32P - Aspenden Hall (0.75) TL32U - Buntingford (1.00) TL32Z - Hare Street (1.00) TL33A - Rushden () TL33F - Broadfield Hall (1.25) TL33K - Little Butter Hill (3.75) TL33Q - Wyddial (2.50) TL33V - Silkmead Farm (0.25) TL33B - Roe Green () TL33G - Green End (0.25) TL33L - Buckland Bottom (7.75) TL33R - Capons Wood (15.00) TL33W - Cave Gate (39.00) TL33C - Wheat Hill (2.50) TL33H - Philpott's Wood () TL33M - The Homestead () TL33S - Strawberry Grove (6.00) TL33X - Barkway (1.50) TL33D - Crouch Hill (5.00) TL33I - Kelshall () TL33N - Reed End (2.50) TL33T - Reed (6.00) TL33Y - Newsells (2.00) TL33E - Lower Coombe Farm (3.00) TL33J - Church Hill (55.50) TL33P - Mile End Farm (10.25) TL33U - Whiteley Hill (1.75) TL33Z - Barley (1.25) TL34F - Highfield Farm (143.25) TL34K - Royston W (0.25) TL34Q - Royston E (17.75) TL34V - Noon's Folly Farm (20.00) TL34L - Beauval Farm (5.00) TL34R - Holland Hall (8.25) TL41A - Briggens Park (38.50) TL41F - Eastwick (1.00) TL41K - Harlow Town Station (20.00) TL41B - Hunsdonbury (1.50) TL41G - Eastwick Hall Farm () TL41L - Gilston Park (20.75) TL41R - Rowney Farm (4.50) TL41W - Durrington Hall (51.75) TL41C - Hunsdon () TL41H - Hunsdon Lodge Farm () TL41M - Stonards (11.25) TL41S - High Wych () TL41X - Sawbridgeworth (38.25) TL41D - Little Blakesware () TL41I - Perry Green (3.75) TL41N - Allen's Green () TL41T - Trims Green (22.50) TL41Y - Spellbrook () TL41E - Kettle Green () TL41J - Much Hadham () TL41P - Green Tye (4.00) TL41U - Thorley (32.25) TL41Z - Thorley Street () TL42A - Bromley (2.25) TL42F - Hadham Ford () TL42K - Bury Green () TL42Q - Stortford Park (5.00) TL42V - Bishop's Stortford (15.33) TL42B - Wellpond Green () TL42G - Albury End (3.50) TL42L - Hadham Hall () TL42R - Wickham Hall (6.25) TL42W - Foxdells Farm () TL42C - Braughing Friars () TL42H - Albury (11.25) TL42M - Clapgate (2.75) TL42S - Farnham (0.25) TL42X - Hazel End () TL42D - Bozen Green () TL42I - Furneux Pelham (2.50) TL42N - Hixham Hall () TL42T - Mallows Green (4.00) TL42E - Little Hormead (1.50) TL42J - Whitebarns (2.25) TL42P - Stocking Pelham () TL43A - Brick House Farm (0.50) TL43F - Brent Pelham (0.75) TL43K - Starling's Green () TL43B - Anstey () TL43G - Meesden () TL43L - Further Ford End () TL43C - Nuthampstead () TL43H - Langley Lawn () TL43D - Abbotsbury Farm (2.25) TL43I - Chrishall Common () TL43E - Chishall Windmill (9.00) TL44A - Clay Hill (20.00) TL51C - Gladwyns (34.25) TL52A - Start Hill () TL52F - Tilekiln Green (18.00) TL52B - Birchanger () TL52C - Stansted Mountfitchet () TQ09A - Chalfont St Peter (10.75) TQ09F - West Hyde (8.75) TQ09K - Harefield (16.50) TQ09Q - Battlers Wells Farm (19.75) TQ09V - Northwood (29.50) TQ09B - Chalfont Common () TQ09G - Maple Cross (30.25) TQ09L - Stocker's Lake (23.25) TQ09R - Batchworth Heath () TQ09W - Moor Park (2.25) TQ09C - Chorleywood West (1.50) TQ09H - Chorleywood Bottom (1.00) TQ09M - Rickmansworth (21.00) TQ09S - Croxley Green (13.25) TQ09X - Holywell (30.00) TQ09I - Chorleywood Common (4.50) TQ09N - Loudwater (12.75) TQ09T - Whippendell Wood (26.75) TQ09Y - Cassiobury Park (37.50) TQ09E - Chenies (8.25) TQ09J - Sarratt Bottom (0.50) TQ09P - Sarratt (8.75) TQ09U - Chandler's Cross (1.00) TQ09Z - Leavesden Green (10.75) TQ19A - Pinnerwood Park (28.50) TQ19B - Oxhey Wood (29.00) TQ19G - Carpenders Park (16.25) TQ19L - Bentley Priory (14.50) TQ19C - Oxhey (4.25) TQ19H - Bushey (0.75) TQ19M - Bushey Heath (37.00) TQ19S - Aldenham Reservoir (54.00) TQ19X - Edgewarebury (3.00) TQ19D - Watford (21.75) TQ19I - Bushey Hall (36.50) TQ19N - Letchmore Heath (6.75) TQ19T - Aldenham Park (6.00) TQ19Y - Borehamwood (60.50) TQ19E - North Watford (40.25) TQ19J - M1 Junction 5 (12.00) TQ19P - Batlers Green (39.75) TQ19U - Radlett (3.00) TQ19Z - Kitwells Farm (2.50) TQ29C - Sterling Corner (7.25) TQ29D - Rowley Green (11.00) TQ29I - Galley Lane Farm (21.50) TQ29N - High Barnet (2.50) TQ29E - Buckettsland Farm (10.50) TQ29J - Dancers Hill (51.75) TQ29P - Wrotham Park (0.50) TQ29U - Hadley Wood (27.75) TQ39U - Enfield Lock (2.00)
Major towns Important bird sites 10km Square IDs

Mean hourly count


0 - <2.25


2.25 - <6.00


6.00 - <13.00


13.00 - <27.75


27.75 or more


Hertfordshire Bird Atlas webpages designed by LTD Design Consultants and built by Garganey Consulting