Hertfordshire Bird Atlas Abundance Map

Carrion Crow

Corvus corone

SP81W - Buckland (2.00)

SP81S - Draytonmead Farm (5.25)

SP81X - Long Marston (7.25)

SP81T - Thistlebrook Farm (3.50)

SP81Y - Alnwick Farm (9.25)

SP81Z - Crafton (4.75)

SP90V - Meadhams Farm (8.50)

SP90W - Orchard Leigh (3.25)

SP90X - Whelpley Hill Farm (16.00)

SP90I - Cholesbury (5.75)

SP90N - Hawridge Common (16.00)

SP90T - Hockeridge Wood (3.00)

SP90Y - Berkhamsted S ()

SP90E - Spencersgreen (2.75)

SP90J - Hastoe (8.50)

SP90P - Champneys (9.50)

SP90U - Northchurch (1.50)

SP90Z - Berkhamsted N (9.33)

SP91A - Tring W ()

SP91F - Tring E (2.75)

SP91K - New Ground (4.75)

SP91Q - Norcott Hill (1.50)

SP91V - Berkhamsted Common (2.50)

SP91B - Little Tring (2.00)

SP91G - New Mill (0.67)

SP91L - Aldbury Nowers (5.50)

SP91R - Aldbury (6.00)

SP91W - Little Gaddesden (4.00)

SP91C - Wilstone (2.75)

SP91H - College Lake (2.00)

SP91M - Pitstone Hill (4.25)

SP91X - Ringshall (1.50)

SP91D - West End Farm (1.50)

SP91E - Mentmore (2.00)

TL00A - Flaunden (2.50)

TL00F - Belsize (5.75)

TL00K - Chipperfield (10.25)

TL00Q - Berrybushes Wood (24.00)

TL00V - Abbots Langley (3.25)

TL00B - Bovingdon (28.50)

TL00G - Bulstrode (3.00)

TL00L - Whippendell Bottom (4.50)

TL00R - Kings Langley (3.00)

TL00W - Bedmond (6.00)

TL00C - Bovingdon Airfield (21.75)

TL00H - Westbrook Hay (9.75)

TL00M - Apsley (0.67)

TL00S - Nash Mills (5.75)

TL00X - Pimlico (23.75)

TL00D - Broadway Farm (4.25)

TL00I - Chaulden (7.25)

TL00N - Hemel Hempstead (5.75)

TL00T - Adeyfield (11.75)

TL00Y - Leverstock Green (10.00)

TL00E - Potten End (1.25)

TL00J - Boxted Farm (4.25)

TL00P - Gadebridge (7.75)

TL00U - Grovehill (4.75)

TL00Z - Buncefield (3.00)

TL01A - Nettleden (4.50)

TL01F - Great Gaddesden (4.50)

TL01K - Briden's Camp (5.25)

TL01Q - Easbrookhay Farm (4.25)

TL01V - The Aubreys (8.50)

TL01B - Hudnall (2.75)

TL01G - Widmore Farm (7.00)

TL01L - Gaddesden Row (4.25)

TL01R - Puddephat's Farm (3.50)

TL01W - Rabbitfield Spring (12.00)

TL01C - Studhamhall Farm (0.50)

TL01H - Clement's End (0.67)

TL01M - Beechwood House (1.67)

TL01S - Flamstead (8.75)

TL01X - Friar's Wash (3.50)

TL01I - Dedmansey Wood (2.25)

TL01N - Markyate W (2.75)

TL01T - Markyate E (2.75)

TL01Y - Pepsal End (6.00)

TL01P - Kensworth Lynch (10.00)

TL01U - Caddington (5.00)

TL01Z - Slip End (3.00)

TL02Y - Galley Hill (2.75)

TL02Z - Barton Hill Farm (6.00)

TL03V - Barton-le-Clay (6.75)

TL10A - Kingswood (16.00)

TL10F - Bricket Wood Common (6.25)

TL10K - Netherwylde Farm (3.50)

TL10Q - Harperbury (3.25)

TL10V - Shenley (4.25)

TL10B - M25 Junction 21 (5.00)

TL10G - Blackgreen Wood (0.50)

TL10L - Frogmore (2.00)

TL10R - Broad Colney (9.25)

TL10W - Salisbury Hall (7.00)

TL10C - Potters Crouch (1.50)

TL10H - Chiswell Green (3.75)

TL10M - St Julians (5.75)

TL10S - London Colney N (1.50)

TL10X - Tyttenhanger (5.50)

TL10D - Gorhambury (0.25)

TL10I - Praewood Farm (8.50)

TL10N - St Albans (2.00)

TL10T - Fleetville (3.75)

TL10Y - Smallford (4.50)

TL10E - Hogg End (2.50)

TL10J - Batchwood Hall (3.25)

TL10P - New Greens and Townsend (3.75)

TL10U - Marshalswick (2.75)

TL10Z - Beech Farm (1.25)

TL11A - Beaumont Hall (7.75)

TL11F - Hedge's Farm (6.50)

TL11K - Cheapside Farm (3.50)

TL11Q - Sandridge (8.50)

TL11V - Symonshyde Great Wood (3.00)

TL11B - Harpendenbury (9.75)

TL11G - Hatching Green (9.00)

TL11L - Harpenden SE (3.50)

TL11R - Nomansland (5.25)

TL11W - Coleman Green (7.25)

TL11C - Faulkners End Farm (4.50)

TL11H - Harpenden NW (4.25)

TL11M - Batford (6.25)

TL11S - Marshalls Heath (7.75)

TL11X - Bride Hall (4.25)

TL11D - West Hyde (6.00)

TL11I - East Hyde (3.25)

TL11N - Bower Heath (11.50)

TL11T - Blackmore End (5.75)

TL11Y - Ayot St Lawrence (7.75)

TL11J - Chiltern Green (7.50)

TL11P - Ansells End (16.67)

TL11U - Kimpton (14.67)

TL11Z - Kimpton Mill (4.00)

TL12F - Luton Airport (2.00)

TL12K - Diamond End (4.25)

TL12Q - Bendish (3.50)

TL12V - Whitwell (5.50)

TL12B - Stopsley (2.25)

TL12G - Tea Green (4.00)

TL12L - The Heath (6.75)

TL12R - Kingswalden Park (1.75)

TL12W - Hitch Wood (3.25)

TL12C - Butterfield Green (3.50)

TL12H - Lilley Bottom (5.00)

TL12M - Ley Green (1.50)

TL12S - Preston (2.00)

TL12X - Poynders End (1.50)

TL12D - Lilley (1.75)

TL12I - The Flints (2.50)

TL12N - Great Offley (2.25)

TL12T - Offleyholes Farm (8.75)

TL12Y - Gosmore (0.50)

TL12E - Telegraph Hill (4.00)

TL12J - Little Offley (2.50)

TL12P - Gravehill Plantation (1.00)

TL12U - Hitchin SW (5.25)

TL12Z - Hitchin Hill (5.67)

TL13A - Hexton (4.00)

TL13F - Tingley Wood (3.50)

TL13K - Pirton (1.50)

TL13Q - Oughtonhead Common (4.00)

TL13V - Ickleford (3.50)

TL13B - Higham Gobion (4.50)

TL13G - Apsley End (3.00)

TL13L - Burge End (4.50)

TL13R - Holwell (7.50)

TL13W - Ickleford Common (7.50)

TL13S - Holwellbury (5.50)

TL13X - Arlesey (3.25)

TL20A - Ridge (12.25)

TL20F - South Mimms (2.50)

TL20K - Potters Bar (5.00)

TL20Q - Five Acre Wood (4.33)

TL20V - Barvin Park (13.75)

TL20B - Redwell Wood Farm (10.25)

TL20G - Royal Veterinary College (6.25)

TL20L - Swanley Bar (84.50)

TL20R - Queenswood (3.75)

TL20W - Northaw (7.00)

TL20C - North Mymms Park (9.00)

TL20H - Welham Green (4.50)

TL20M - Bell Bar (4.75)

TL20S - Kentish Lane Farm (6.50)

TL20X - Great Wood County Park (8.75)

TL20D - Roehyde (1.75)

TL20I - South Hatfield (7.50)

TL20N - Woodside (8.25)

TL20T - Wildhill (16.75)

TL20Y - Little Berkhamsted (4.00)

TL20E - Hatfield Aerodrome (11.50)

TL20J - Birchwood (6.50)

TL20P - Home Park (5.50)

TL20U - Essendon (7.50)

TL20Z - Howe Green (10.25)

TL21A - Cromerhyde Farm (9.25)

TL21F - Stanborough (9.00)

TL21K - Hatfield Hyde (3.50)

TL21Q - Holwell Court Farm (8.00)

TL21V - Letty Green (4.00)

TL21B - Brocket Park (4.50)

TL21G - Sherrardspark (6.00)

TL21L - Peartree (6.00)

TL21R - Panshanger Aerodrome (5.25)

TL21W - Panshanger Stables (6.00)

TL21C - Ayot St Peter (8.25)

TL21H - Digswell Park (3.00)

TL21M - Digswell (7.75)

TL21S - Tewin (4.00)

TL21X - Bramfield (14.75)

TL21D - Pulmer Water (6.50)

TL21I - Welwyn (6.50)

TL21N - Harmergreen Wood (5.75)

TL21T - Bull's Green (8.75)

TL21Y - Bramfield Woods (4.00)

TL21E - Codicote (3.50)

TL21J - Tagmore Green (4.25)

TL21P - Woolmer Green (4.50)

TL21U - Datchworth (7.25)

TL21Z - Watkin's Hall Farm (8.75)

TL22A - Rusling End (29.00)

TL22F - Old Knebworth (1.25)

TL22K - Knebworth (5.00)

TL22Q - Bragbury End (5.67)

TL22V - Frogmore Hall (6.50)

TL22B - Langley Bottom (11.00)

TL22G - Norton Green (4.75)

TL22L - Broadwater (5.50)

TL22R - Aston (4.75)

TL22W - Benington Lordship (4.00)

TL22C - Almshoe Bury (2.00)

TL22H - Stevenage Old Town (2.50)

TL22M - Pin Green (37.50)

TL22S - Chells Manor (6.50)

TL22X - Walkern Lodge (6.25)

TL22D - Titmore Green (4.50)

TL22I - Lister Hospital (4.25)

TL22N - Chesfield Park (17.00)

TL22T - Boxbury Farm (4.75)

TL22Y - Walkern (8.25)

TL22E - Great Wymondley (6.25)

TL22J - Rowley Court (2.75)

TL22P - Damask Green (3.50)

TL22U - Hall's Green (13.25)

TL22Z - Cromer (3.00)

TL23A - Letchworth Hall Hotel (2.75)

TL23F - Willian (9.50)

TL23K - Lannock Manor (11.50)

TL23Q - Weston (7.00)

TL23V - Kingswoodbury (4.00)

TL23B - Letchworth West (12.00)

TL23G - Letchworth East (3.25)

TL23L - Baldock (3.50)

TL23R - Bird Hill (7.50)

TL23W - Wallington (5.25)

TL23C - Letchworth Sewage Works (0.50)

TL23H - Norton and Radwell (2.00)

TL23M - Bygrave Common (2.50)

TL23S - The Firs (1.75)

TL23X - Bygrave Lodge Farm (4.50)

TL23I - A1(M) Junction 10 (7.00)

TL23N - Newnham (3.50)

TL23T - Bygrave (5.75)

TL23Y - Slip End ()

TL23J - Caldecote (4.00)

TL23P - Newnham Hill (4.00)

TL23U - Ashwell (1.00)

TL23Z - Ashwell and Morden Station (3.00)

TL24F - Hinxworth (8.00)

TL24K - Ashwell End (2.75)

TL24Q - Cold Harbour (5.00)

TL24V - Gatley (0.50)

TL24L - Dunton Lodge Farm (2.00)

TL24R - Guilden Morden S (4.50)

TL24S - Guilden Morden N (1.00)

TL30A - Cattlegate Farm (6.00)

TL30F - Theobalds Manor (3.50)

TL30K - Theobalds Park (2.50)

TL30Q - Bowyers Water (15.00)

TL30B - Cuffley (4.00)

TL30G - Goff's Oak (5.00)

TL30L - Flamstead End (8.75)

TL30R - Seventy Acres Lake (2.67)

TL30C - Newgate Street (4.75)

TL30H - Hammond Street (6.75)

TL30M - Wormleybury (6.00)

TL30S - Turnford (4.25)

TL30D - Blackfan Wood (8.25)

TL30I - Cowheath Wood (6.25)

TL30N - Carneles Green (4.00)

TL30T - Broxbourne (4.00)

TL30Y - Nazeing Mead (5.75)

TL30E - Bayford (7.00)

TL30J - Monks Green (19.25)

TL30P - Goose Green (3.25)

TL30U - Hoddesdon (5.50)

TL30Z - Rye House Station (5.75)

TL31A - Bayfordbury (8.75)

TL31F - Brickendonbury (10.25)

TL31K - Hertford Heath (4.00)

TL31Q - St Margarets (7.50)

TL31V - Stanstead Abbotts (5.50)

TL31B - Hertford North Station (2.00)

TL31G - Hertford (9.50)

TL31L - Rush Green (6.25)

TL31R - Great Amwell (4.00)

TL31W - Little Briggens (2.50)

TL31C - Waterford (3.00)

TL31H - Ware Park Farm (13.00)

TL31M - Ware (4.25)

TL31S - Great Cozens (3.25)

TL31X - Wareside (7.00)

TL31D - Stapleford (4.50)

TL31I - Tonwell (5.00)

TL31N - Wadesmill (10.00)

TL31T - Fabdens (0.50)

TL31Y - Bakers End (6.50)

TL31E - Watton at Stone (3.75)

TL31J - Sacombe (12.50)

TL31P - Sacombe Green (12.25)

TL31U - High Cross (3.75)

TL31Z - Barwick (4.50)

TL32A - Whempstead (2.00)

TL32F - Dane End (4.50)

TL32K - Potter's Green (2.50)

TL32Q - Colliers End (2.50)

TL32V - Latchford (4.75)

TL32B - Burn's Green (2.25)

TL32G - Haultwick (6.50)

TL32L - Levens Green (4.25)

TL32R - Old Hall Green (1.75)

TL32W - Standon (1.00)

TL32C - Clay End (1.75)

TL32H - Wood End (2.00)

TL32M - Great Munden (1.75)

TL32S - Hamels Park (2.25)

TL32X - Braughing (2.75)

TL32D - Ardeley (1.00)

TL32I - Moor Green (8.33)

TL32N - Whatbarn Farm (4.75)

TL32T - Westmill (7.25)

TL32Y - Dassels (2.25)

TL32E - Bancroft Farm (2.50)

TL32J - Cottered (0.75)

TL32P - Aspenden Hall (3.50)

TL32U - Buntingford (5.25)

TL32Z - Hare Street (3.25)

TL33A - Rushden (10.50)

TL33F - Broadfield Hall (8.25)

TL33K - Little Butter Hill (7.50)

TL33Q - Wyddial (4.75)

TL33V - Silkmead Farm (4.50)

TL33B - Roe Green (3.75)

TL33G - Green End (5.25)

TL33L - Buckland Bottom (4.00)

TL33R - Capons Wood (2.75)

TL33W - Cave Gate (6.50)

TL33C - Wheat Hill (2.00)

TL33H - Philpott's Wood (2.75)

TL33M - The Homestead (2.75)

TL33S - Strawberry Grove (3.00)

TL33X - Barkway (5.00)

TL33D - Crouch Hill ()

TL33I - Kelshall (1.25)

TL33N - Reed End (0.50)

TL33T - Reed (6.25)

TL33Y - Newsells (5.25)

TL33E - Lower Coombe Farm (5.00)

TL33J - Church Hill (0.75)

TL33P - Mile End Farm (0.75)

TL33U - Whiteley Hill (3.50)

TL33Z - Barley (5.00)

TL34F - Highfield Farm (2.25)

TL34K - Royston W ()

TL34Q - Royston E (2.50)

TL34V - Noon's Folly Farm (2.75)

TL34L - Beauval Farm (9.00)

TL34R - Holland Hall (3.33)

TL41A - Briggens Park (5.50)

TL41F - Eastwick (7.00)

TL41K - Harlow Town Station (10.00)

TL41B - Hunsdonbury (2.25)

TL41G - Eastwick Hall Farm (1.75)

TL41L - Gilston Park (12.25)

TL41R - Rowney Farm (2.00)

TL41W - Durrington Hall (12.00)

TL41C - Hunsdon (3.25)

TL41H - Hunsdon Lodge Farm (2.00)

TL41M - Stonards (1.50)

TL41S - High Wych (2.75)

TL41X - Sawbridgeworth (4.00)

TL41D - Little Blakesware (4.25)

TL41I - Perry Green (0.25)

TL41N - Allen's Green (0.50)

TL41T - Trims Green (4.50)

TL41Y - Spellbrook (4.25)

TL41E - Kettle Green (6.25)

TL41J - Much Hadham (6.25)

TL41P - Green Tye (2.25)

TL41U - Thorley (2.50)

TL41Z - Thorley Street (11.25)

TL42A - Bromley (3.00)

TL42F - Hadham Ford (7.50)

TL42K - Bury Green (0.50)

TL42Q - Stortford Park (2.75)

TL42V - Bishop's Stortford (4.67)

TL42B - Wellpond Green (3.25)

TL42G - Albury End (35.50)

TL42L - Hadham Hall (7.50)

TL42R - Wickham Hall (2.00)

TL42W - Foxdells Farm (3.00)

TL42C - Braughing Friars (2.75)

TL42H - Albury (6.25)

TL42M - Clapgate (15.75)

TL42S - Farnham (1.75)

TL42X - Hazel End (2.50)

TL42D - Bozen Green (1.75)

TL42I - Furneux Pelham (2.00)

TL42N - Hixham Hall (3.50)

TL42T - Mallows Green (3.00)

TL42E - Little Hormead (4.00)

TL42J - Whitebarns (3.00)

TL42P - Stocking Pelham (1.25)

TL43A - Brick House Farm (4.50)

TL43F - Brent Pelham (2.00)

TL43K - Starling's Green (1.50)

TL43B - Anstey (1.50)

TL43G - Meesden (3.25)

TL43L - Further Ford End (4.25)

TL43C - Nuthampstead (5.00)

TL43H - Langley Lawn (4.00)

TL43D - Abbotsbury Farm (2.50)

TL43I - Chrishall Common (1.50)

TL43E - Chishall Windmill (2.50)

TL44A - Clay Hill (2.75)

TL51C - Gladwyns (3.75)

TL52A - Start Hill (2.25)

TL52F - Tilekiln Green (1.67)

TL52B - Birchanger (2.33)

TL52C - Stansted Mountfitchet (1.33)

TQ09A - Chalfont St Peter (12.50)

TQ09F - West Hyde (1.00)

TQ09K - Harefield (0.50)

TQ09Q - Battlers Wells Farm (2.50)

TQ09V - Northwood (6.00)

TQ09B - Chalfont Common (5.25)

TQ09G - Maple Cross (4.00)

TQ09L - Stocker's Lake (2.00)

TQ09R - Batchworth Heath (1.75)

TQ09W - Moor Park (11.00)

TQ09C - Chorleywood West ()

TQ09H - Chorleywood Bottom (2.75)

TQ09M - Rickmansworth (3.25)

TQ09S - Croxley Green (3.25)

TQ09X - Holywell (10.00)

TQ09I - Chorleywood Common (5.25)

TQ09N - Loudwater (4.50)

TQ09T - Whippendell Wood (7.75)

TQ09Y - Cassiobury Park (2.50)

TQ09E - Chenies (1.50)

TQ09J - Sarratt Bottom (8.25)

TQ09P - Sarratt (7.50)

TQ09U - Chandler's Cross (13.25)

TQ09Z - Leavesden Green (6.50)

TQ19A - Pinnerwood Park (9.25)

TQ19B - Oxhey Wood (13.25)

TQ19G - Carpenders Park (10.75)

TQ19L - Bentley Priory (3.50)

TQ19C - Oxhey (5.00)

TQ19H - Bushey (5.75)

TQ19M - Bushey Heath (3.00)

TQ19S - Aldenham Reservoir (3.25)

TQ19X - Edgewarebury (13.25)

TQ19D - Watford (4.50)

TQ19I - Bushey Hall (4.50)

TQ19N - Letchmore Heath (9.25)

TQ19T - Aldenham Park (10.00)

TQ19Y - Borehamwood (10.25)

TQ19E - North Watford (9.00)

TQ19J - M1 Junction 5 (3.50)

TQ19P - Batlers Green (5.75)

TQ19U - Radlett (6.50)

TQ19Z - Kitwells Farm (12.75)

TQ29C - Sterling Corner (11.50)

TQ29D - Rowley Green (5.75)

TQ29I - Galley Lane Farm (31.00)

TQ29N - High Barnet (2.25)

TQ29E - Buckettsland Farm (8.25)

TQ29J - Dancers Hill (8.00)

TQ29P - Wrotham Park (9.00)

TQ29U - Hadley Wood (4.00)

TQ39U - Enfield Lock (3.25)

Major towns Important bird sites 10km Square IDs

Mean hourly count

0 - <2.50

2.50 - <3.75

3.75 - <5.25

5.25 - <7.75

7.75 or more

This map shows the relative abundance data from TTVs, plotted as mean hourly counts.

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1967-73 Breeding Atlas

1981-84 Winter Atlas

1988-92 Breeding Atlas

2007-12 Winter Atlas

2008-12 Breeding Atlas

1967 vs 1998 Change

1998 vs 2008 Change

2007-12 Winter Abundance

2008-12 Breeding Abundance

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