BBS

Number of 1km squares in which each species
was recorded in South West England

These figures show the total number of squares in which a given species was recorded at least once in a particular year. They provide as useful indication of which species are widely distributed and which have more restricted distributions. For comparative purposes the data can be used to calculate the frequency of occurrence of each species by dividing the number of squares occupied by the total number of squares surveyed. This measure has the advantage that it can be used to compare results based on different numbers of squares. Particular care should be taken in interpreting such results where only a few squares could be surveyed (fewer than 30-50 squares). While these figures may provide a general indication of major changes in distributions over time they do not provide a statistically robust measure of such changes because they do not take account of the BBS sampling strategy or of temporal variation in the sample of squares surveyed.
BBS trend analyses are available here

Species	94	95	96	97	98	99	00	01	02	03	04	05	06	07	08	09
Total No squares surveyed	205	236	252	288	294	309	292	35	283	294	303	336	440	464	411	417
Mute Swan	14	17	25	27	28	30	24	2	30	27	30	30	49	53	40	41
Black Swan	.	.	1	1	1	1	1	.	1	1	1	1	1	1	2	1
Whooper Swan	.	.	.	.	.	.	.	.	.	.	1	.	.	.	.	.
Pink-footed Goose	.	.	.	.	.	.	.	.	1	1	.	.	.	.	.	.
Greylag Goose	.	1	1	2	2	.	1	.	3	4	.	1	6	2	5	2
Feral/hybrid Goose	.	.	.	.	.	.	.	.	.	.	.	1	1	2	1	2
Bar-headed Goose	.	.	.	.	.	.	.	.	1	.	2	.	.	1	.	1
Snow Goose	.	.	.	1	2	1	3	.	.	.	.	.	.	.	.	.
Canada Goose	20	21	24	31	31	36	21	2	43	41	44	53	65	75	48	61
Barnacle Goose	.	2	1	1	.	1	1	.	1	1	2	.	.	1	.	.
Brent Goose	.	.	.	.	.	.	.	.	.	.	.	.	.	1	1	1
Red-breasted Goose	.	.	.	.	.	.	.	.	.	.	1	.	.	.	.	.
Egyptian Goose	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.
Ruddy Shelduck	.	.	1	.	.	.	1	.	.	.	.	.	.	.	.	.
Shelduck	10	16	20	18	20	17	19	1	14	15	15	20	25	26	24	17
Muscovy Duck	.	.	1	.	.	.	.	.	.	.	.	.	.	.	.	.
Carolina Wood Duck	.	.	.	1	.	.	.	.	1	1	.	.	.	.	.	.
Mandarin	.	2	1	2	.	2	1	.	2	3	2	.	3	2	4	5
Wigeon	.	1	.	1	.	.	.	.	.	1	.	1	1	2	1	2
Gadwall	3	3	3	2	3	2	4	1	3	2	4	3	2	2	5	4
Teal	.	1	3	2	1	.	2	.	1	1	3	1	2	1	2	3
Mallard	77	92	111	114	116	138	135	11	124	121	135	158	187	217	181	172
Feral/hybrid mallard type	.	.	.	.	.	1	.	1	1	2	4	3	5	4	2	4
Pintail	.	1	1	1	.	.	.	.	.	.	.	.	1	.	.	.
Garganey	.	.	1	.	.	.	.	.	.	1	.	1	2	.	.	.
Shoveler	.	1	1	.	1	3	.	.	.	2	1	1	1	2	1	1
Pochard	1	1	1	2	1	1	1	.	1	1	1	5	2	2	2	4
Ring-necked Duck	.	.	.	.	1	1	.	.	.	.	.	.	.	.	.	.
Tufted Duck	8	6	6	10	10	11	9	.	10	6	9	9	13	10	9	10
Scaup	.	.	.	1	.	.	.	.	.	1	.	.	.	.	.	.
Eider	1	.	.	.	.	.	.	.	.	.	.	.	1	.	.	.
Long-tailed Duck	.	.	.	.	.	1	.	.	.	.	.	.	.	.	.	.
Goldeneye	1	.	1	.	1	.	1	.	1	.	.	.	.	.	.	.
Red-breasted Merganser	.	1	1	1	1	.	1	.	.	1	.	1	.	1	.	.
Goosander	.	2	1	.	4	.	2	.	1	3	1	1	2	.	.	1
Ruddy Duck	1	.	.	1	1	2	2	.	2	2	2	3	1	1	2	1
Helmeted Guineafowl	.	.	.	.	.	.	.	.	.	2	.	1	3	.	4	3
Red Grouse	.	1	1	.	.	1	.	.	.	1	.	.	.	1	.	.
Red-legged Partridge	24	18	30	29	38	33	36	6	44	47	70	64	75	80	71	79
Grey Partridge	15	12	17	13	12	14	12	.	10	10	8	13	20	13	9	7
Quail	2	1	1	7	8	2	3	.	.	1	3	7	1	1	.	1
Pheasant	134	152	167	191	205	240	210	16	213	232	244	279	360	366	321	344
Golden Pheasant	.	.	1	.	.	.	1	.	.	.	.	.	1	.	.	.
Peafowl	.	.	1	4	1	1	1	1	1	2	3	4	5	5	5	6
Red-throated Diver	.	.	.	1	.	.	.	.	.	.	.	.	.	.	.	.
Great Northern Diver	.	.	1	.	.	.	.	.	.	.	.	.	.	.	.	.
Little Grebe	3	5	3	6	5	12	5	.	8	4	5	8	7	10	7	5
Great Crested Grebe	5	5	5	7	6	7	5	.	9	6	10	8	5	5	8	8
Slavonian Grebe	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.
Fulmar	2	2	1	1	2	3	2	.	1	1	1	1	3	4	3	2
Manx Shearwater	.	.	1	.	1	1	.	.	.	1	.	.	.	.	.	.
Gannet	1	2	2	.	1	2	.	1	1	1	1	1	1	3	1	.
Cormorant	17	26	26	29	28	29	24	6	31	32	37	28	37	43	40	38
Shag	2	2	2	2	2	2	1	.	1	.	.	.	1	2	1	3
Cattle Egret	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.
Little Egret	1	1	4	1	1	2	1	.	2	4	10	15	17	25	18	23
Grey Heron	46	53	59	72	51	71	62	6	60	81	75	90	100	125	100	97
Purple Heron	.	.	.	.	1	.	.	.	.	.	.	.	.	.	.	.
Spoonbill	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.
Honey Buzzard	.	1	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Red Kite	.	.	1	.	.	.	.	.	.	.	1	2	3	5	5	5
Marsh Harrier	.	.	.	.	.	.	.	.	.	.	.	.	1	.	.	.
Hen Harrier	.	.	.	1	2	.	.	.	.	.	.	.	1	.	.	.
Montagus Harrier	.	.	.	.	.	.	.	.	.	.	1	1	.	1	.	.
Goshawk	1	.	1	1	1	.	1	.	2	1	1	2	2	1	2	2
Sparrowhawk	40	29	36	37	42	43	42	7	35	51	44	56	58	61	58	48
Harris Hawk	.	.	1	1	1	.	.	.	.	.	.	.	.	.	.	.
Buzzard	93	107	118	153	167	170	187	16	180	181	203	219	298	300	290	290
Osprey	.	.	1	.	.	.	1	.	.	.	1	.	.	.	.	1
Kestrel	62	59	57	74	85	63	73	6	55	74	66	94	102	104	96	77
Merlin	.	.	.	1	1	.	.	.	1	.	.	.	.	3	.	.
Hobby	2	3	8	5	4	3	4	.	10	8	4	6	12	11	13	9
Peregrine	.	.	3	2	6	3	3	.	5	5	4	11	12	16	20	7
Water Rail	.	1	.	.	.	.	.	.	.	1	.	.	.	.	.	.
Moorhen	41	51	54	56	56	70	52	4	49	48	59	58	92	86	82	80
Coot	10	16	19	21	25	24	25	1	16	18	23	24	29	26	19	20
Crane	.	1	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Oystercatcher	5	5	6	5	6	7	7	1	6	1	5	9	10	9	9	13
Avocet	.	.	.	.	.	.	.	.	.	.	1	.	.	.	.	.
Stone-curlew	.	1	1	1	.	.	.	.	1	.	1	1	.	2	1	.
Little Ringed Plover	.	.	.	1	.	.	.	.	.	.	.	1	1	.	.	.
Ringed Plover	1	3	3	2	2	1	4	.	1	1	3	2	2	5	2	1
Golden Plover	.	1	.	.	.	1	.	.	.	2	1	.	.	.	3	.
Grey Plover	.	1	.	.	.	.	.	.	.	.	.	.	1	.	1	1
Lapwing	35	30	38	29	23	35	25	3	20	19	18	37	29	31	28	24
Knot	.	.	.	.	.	1	.	.	.	.	.	.	.	.	.	.
Sanderling	.	1	2	1	.	.	.	.	.	.	.	1	.	.	.	.
Dunlin	.	5	3	1	2	1	2	.	1	1	1	1	1	.	2	3
Jack Snipe	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1
Snipe	2	4	1	6	2	2	2	.	4	3	1	4	7	6	6	3
Woodcock	.	1	.	.	.	.	.	.	.	1	.	.	1	1	.	.
Black-tailed Godwit	.	.	1	.	.	.	2	.	.	.	.	.	1	.	1	.
Bar-tailed Godwit	1	.	.	.	1	1	2	.	.	.	.	.	.	.	1	2
Whimbrel	4	6	4	6	5	8	7	.	7	5	7	7	8	9	7	5
Curlew	9	12	9	14	10	14	8	1	8	7	8	10	16	11	19	12
Common Sandpiper	1	5	6	1	1	3	4	.	.	2	4	4	3	1	2	4
Green Sandpiper	1	1	.	.	.	1	.	.	1	.	.	.	.	.	1	1
Greenshank	.	.	.	.	.	1	1	.	.	.	.	.	.	.	1	.
Redshank	3	3	3	1	3	.	3	.	.	.	1	1	1	2	5	5
Turnstone	1	1	1	1	1	.	.	.	.	.	1	.	.	.	1	.
Kittiwake	3	1	1	1	2	1	1	.	.	.	.	1	1	1	1	1
Black-headed Gull	29	24	22	20	21	19	20	4	20	21	25	29	38	41	40	29
Mediterranean Gull	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.
Common Gull	3	6	3	8	6	6	3	.	3	6	3	6	6	6	8	4
Lesser Black-backed Gull	47	57	64	73	77	92	91	11	91	92	93	112	134	140	134	140
Herring Gull	61	76	86	98	106	106	107	15	108	115	122	156	182	209	193	193
Great Black-backed Gull	9	7	13	9	18	14	14	3	12	9	10	18	16	38	26	25
Black Tern	.	.	1	.	2	.	.	.	.	.	.	.	.	.	1	.
Sandwich Tern	.	1	1	2	2	1	1	.	1	1	1	1	1	1	2	2
Common Tern	1	2	2	1	3	1	3	1	1	1	1	1	2	1	1	.
Arctic Tern	.	.	.	.	.	1	.	.	.	.	.	.	.	.	.	.
Guillemot	.	.	1	.	1	.	.	.	.	.	.	1	.	.	.	.
Razorbill	.	.	1	.	1	.	.	.	.	.	.	1	1	1	.	.
Feral Pigeon	46	47	59	70	70	56	64	13	55	63	67	63	79	82	80	71
Stock Dove	77	82	99	93	94	109	104	6	98	107	107	111	149	161	135	141
Woodpigeon	197	229	246	283	285	300	284	35	277	285	294	330	432	452	404	409
Collared Dove	107	132	131	165	155	173	159	18	162	167	171	174	229	245	242	212
Turtle Dove	8	5	11	5	6	5	5	.	3	4	5	8	4	4	3	3
Cuckoo	100	103	116	101	84	95	87	6	60	57	65	69	79	91	57	52
Barn Owl	1	2	.	.	3	2	3	1	4	1	5	3	10	6	11	3
Little Owl	9	11	13	16	6	13	13	1	14	9	11	13	14	11	8	9
Tawny Owl	6	10	9	6	14	11	8	.	10	10	7	17	10	22	13	15
Long-eared Owl	.	.	.	.	1	.	.	.	.	.	.	.	.	.	.	1
Short-eared Owl	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.
Nightjar	1	.	.	1	.	.	.	.	.	.	.	.	1	.	.	.
Swift	116	134	119	128	142	135	137	20	111	119	122	136	165	166	187	154
Kingfisher	4	6	6	6	10	8	4	2	10	11	4	7	19	14	13	11
Green Woodpecker	71	78	85	101	114	110	119	10	95	121	117	136	176	162	171	158
Great Spotted Woodpecker	54	63	83	103	90	102	106	7	101	117	139	155	222	242	213	203
Lesser Spotted Woodpecker	2	1	2	3	3	4	1	.	3	4	1	2	5	4	5	6
Woodlark	2	2	2	3	1	2	2	.	1	1	2	4	5	5	5	2
Skylark	148	159	172	187	190	205	183	16	171	178	179	211	276	296	254	254
Sand Martin	5	5	10	4	2	6	7	2	8	4	4	10	9	10	7	5
Swallow	157	178	203	220	224	251	241	19	225	239	255	285	389	395	355	360
House Martin	88	103	113	125	121	131	129	18	125	128	145	138	196	209	184	168
Tree Pipit	10	9	10	13	10	12	14	2	9	13	10	12	18	12	6	11
Meadow Pipit	32	26	38	38	42	41	34	4	39	43	45	59	70	65	55	52
Rock Pipit	3	1	2	1	2	1	1	.	1	1	.	1	3	5	3	3
Yellow Wagtail	5	6	11	7	4	3	6	.	6	1	6	6	11	5	5	8
Grey Wagtail	23	28	20	19	19	19	31	4	40	36	29	32	39	46	43	44
Pied Wagtail	91	101	127	120	130	129	132	11	130	129	137	172	185	212	190	156
Dipper	2	3	4	1	4	6	2	.	.	3	5	8	11	7	9	6
Wren	193	225	235	263	282	295	280	33	272	284	292	326	417	445	395	397
Dunnock	172	202	208	232	244	262	246	30	252	265	270	294	387	400	359	358
Robin	187	209	235	271	270	292	274	33	272	276	287	316	409	441	397	399
Nightingale	1	3	2	3	3	1	1	1	3	.	3	2	2	4	3	.
Black Redstart	.	.	.	1	.	.	.	.	.	.	.	.	1	1	.	.
Redstart	8	7	5	11	6	5	9	1	4	4	5	8	8	10	17	7
Whinchat	4	6	5	6	6	8	5	.	5	3	3	7	8	7	7	3
Stonechat	9	12	13	7	14	16	19	3	24	25	29	34	34	38	37	23
Wheatear	9	9	19	17	16	24	19	2	21	17	28	27	32	37	39	32
Ring Ouzel	2	1	.	1	.	2	1	.	.	.	2	.	2	.	.	.
Blackbird	200	233	245	280	289	301	285	35	277	288	297	328	433	456	407	411
Fieldfare	.	4	1	3	3	1	6	.	3	6	4	.	4	4	2	1
Song Thrush	150	178	194	210	220	251	230	20	231	245	255	274	363	375	354	354
Redwing	.	.	2	.	.	1	1	.	1	.	.	.	2	2	1	.
Mistle Thrush	89	100	106	121	111	130	114	11	111	131	119	125	151	163	142	126
Cettis Warbler	1	3	3	2	1	4	3	.	3	3	4	6	8	10	9	8
Grasshopper Warbler	1	8	5	4	10	4	8	1	6	4	8	8	13	5	7	7
Sedge Warbler	15	19	25	32	21	26	23	.	27	17	29	30	42	49	38	42
Marsh Warbler	.	1	.	.	1	.	.	.	.	.	.	.	.	.	.	.
Reed Warbler	6	8	14	10	12	9	14	.	15	15	17	18	31	33	30	33
Blackcap	129	141	155	187	199	226	217	23	215	217	238	261	329	339	312	336
Garden Warbler	37	39	49	59	59	63	60	8	52	53	49	70	82	84	76	59
Lesser Whitethroat	29	19	23	23	30	39	32	2	32	38	36	37	60	64	53	60
Whitethroat	99	123	156	167	165	170	176	18	155	148	182	195	253	274	235	239
Dartford Warbler	2	1	1	1	2	1	1	1	1	1	2	3	5	6	6	4
Wood Warbler	7	5	11	9	9	11	8	1	5	8	7	6	9	9	11	6
Chiffchaff	146	178	186	227	234	226	230	25	229	251	251	260	324	380	341	346
Willow Warbler	120	140	139	167	155	167	159	14	121	116	130	141	196	178	149	167
Goldcrest	57	77	75	84	92	113	116	10	114	126	126	160	173	182	160	99
Firecrest	.	.	.	.	.	1	.	.	.	.	.	.	.	.	1	.
Spotted Flycatcher	24	16	28	27	34	38	30	3	23	25	35	27	48	36	34	26
Pied Flycatcher	3	2	2	1	1	1	5	.	2	1	.	2	2	1	6	3
Bearded Tit	.	.	.	1	.	.	.	.	.	.	.	.	.	.	.	.
Long-tailed Tit	76	83	89	78	89	101	103	13	106	116	127	127	163	214	194	160
Blue Tit	180	214	236	272	277	285	269	32	268	271	286	319	411	433	385	382
Great Tit	167	194	209	248	256	273	263	28	248	266	280	313	398	422	382	385
Coal Tit	51	52	63	67	67	78	77	11	87	93	97	118	127	130	117	134
Willow Tit	7	7	6	7	6	11	8	.	2	7	4	4	8	3	8	5
Marsh Tit	19	18	20	35	17	28	24	2	31	30	32	42	32	36	25	29
Nuthatch	46	33	46	55	52	62	55	3	69	71	79	91	118	113	97	87
Treecreeper	30	31	42	44	36	42	37	2	43	54	48	53	63	55	52	46
Golden Oriole	.	.	.	1	.	.	.	.	.	1	.	.	.	.	.	1
Red-backed Shrike	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.	.
Jay	62	59	68	85	70	82	81	10	89	100	97	99	148	152	125	122
Magpie	164	194	218	238	233	252	240	25	237	240	255	278	350	369	336	345
Chough	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.	.
Jackdaw	152	171	193	219	208	228	216	29	203	211	228	247	327	350	317	323
Rook	132	156	167	185	195	195	174	18	171	179	182	197	267	291	255	270
Carrion Crow	193	222	236	264	270	290	279	35	271	285	297	324	418	450	400	412
Raven	13	19	21	25	24	30	30	1	38	39	40	60	79	111	88	97
Starling	150	176	185	200	201	211	197	25	181	176	192	185	229	241	221	194
House Sparrow	129	151	163	185	186	203	188	24	186	189	207	217	279	301	274	266
Tree Sparrow	6	5	3	5	4	5	2	.	2	1	3	4	3	2	3	2
Chaffinch	195	229	246	278	285	299	283	33	273	286	295	328	428	447	400	399
Brambling	.	.	1	1	1	1	.	.	.	.	.	1	1	1	2	.
Serin	1	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Greenfinch	146	186	190	219	228	247	234	28	229	243	257	277	370	374	328	329
Goldfinch	132	149	171	182	160	194	201	24	203	214	217	247	296	343	315	322
Siskin	2	4	2	4	7	8	7	.	7	5	5	5	17	21	21	21
Linnet	110	128	149	160	138	165	165	14	154	175	166	186	215	216	187	195
Lesser Redpoll	.	2	3	2	5	4	6	.	6	4	8	10	14	10	3	7
Crossbill	2	1	1	4	4	1	4	.	2	6	1	2	9	2	3	2
Bullfinch	77	65	80	99	64	75	61	4	93	97	92	126	114	139	116	124
Hawfinch	.	.	1	.	.	1	.	.	.	.	.	.	.	.	.	1
Yellowhammer	133	141	130	153	160	158	139	15	141	141	138	158	195	204	166	181
Cirl Bunting	3	1	3	3	3	2	.	.	2	1	2	3	4	6	4	4
Reed Bunting	16	22	26	28	25	26	25	1	20	28	26	32	39	47	36	37
Corn Bunting	18	16	18	25	21	21	15	3	14	9	14	18	31	30	27	31
Total number of Species	130	146	156	151	150	147	143	88	138	145	142	145	155	151	156	146

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The Breeding Bird Survey (BBS) monitors terrestrial birds throughout the UK to
provide information that underpins the conservation of species and habitats.
The BBS is organised by the BTO on behalf of BTO, JNCC and RSPB
Email: bbs@bto.org

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