Annex B Design Based Analysis – Monthly Apportioned Population Estimates (Berwick Bank Development Array Plus 2km Buffer)

Kittiwake	Density Estimate (birds/ km2)	Lower 95% CI (birds/ km2)	Upper 95% CI (birds/ km2)	Population Estimate (number)	Lower 95% CI (number)	Upper 95% CI (number)	SD	CV (%)
Survey
Mar-19	13.12	6.68	20.85	17174	8743	27281	4774	27.8%
May-19	3.97	2.93	5.11	5191	3829	6684	723	13.92%
Jun-19	2.22	1.78	2.77	2903	2325	3626	338	11.63%
Jul-19	4.8	4.09	5.44	6288	5352	7114	463	7.36%
Aug-19	8.55	7	10.16	11185	9168	13295	1082	9.67%
Sep-19	2.29	1.59	3.08	2997	2084	4029	496	16.53%
Oct-19	0.78	0.43	1.28	1016	557	1672	301	29.56%
Nov-19	0.32	0.22	0.42	419	288	554	68	16.19%
Dec-19	0.28	0.16	0.44	371	209	578	100	26.72%
Jan-20	1.95	1.11	2.96	2547	1453	3879	660	25.88%
Feb-20	1.99	1.02	3.15	2608	1335	4127	708	27.12%
Mar-20	7.52	4.94	10.86	9838	6472	14209	1969	20.01%
May S01 20	5.73	2.96	9.02	7498	3874	11808	2087	27.83%
May S02 20	7.95	5.74	10.06	10405	7519	13162	1437	13.81%
Jun-20	7.83	6.6	9.25	10248	8634	12108	900	8.78%
Jul-20	8.63	6.83	10.68	11292	8942	13975	1307	11.57%
Aug-20	13.24	9.86	16.91	17333	12899	22127	2392	13.8%
Sep-20	14.81	9.92	20.62	19383	12984	26980	3580	18.47%
Oct-20	1.53	0.96	2.21	2009	1256	2891	404	20.07%
Nov-20	5.15	3.11	7.21	6744	4064	9437	1335	19.79%
Dec-20	1.02	0.64	1.46	1331	839	1917	270	20.24%
Jan-21	2.63	1.8	3.52	3442	2362	4608	564	16.38%
Feb-21	2.3	0.56	4.93	3010	732	6448	1527	50.74%
Apr S01 21	7.91	5.85	10.24	10358	7653	13406	1457	14.06%
Apr S02 21	19.06	9.21	30.19	24949	12055	39510	7162	28.71%

Guillemot	Adjusted Density Estimate (birds/ km2)	Adjusted Lower 95% CI (birds/ km2)	Adjusted Upper 95% CI (birds/ km2)	Adjusted Population Estimate (number)	Adjusted Lower 95% CI (number)	Adjusted Upper 95% CI (number)	Adjusted SD	Adjusted CV (%)
Survey
Mar-19	11.07	7.8	15.03	14497	10220	19670	2491	17.18%
May-19	30.02	23.25	38.63	39287	30434	50550	5287	13.46%
Jun-19	6.4	4.17	9.01	8374	5451	11802	1715	20.48%
Jul-19	30.64	25.66	35.91	40107	33585	46999	3846	9.59%
Aug-19	48	26.66	75.96	62815	34898	99414	17552	27.94%
Sep-19	5.23	4.23	6.19	6842	5525	8105	637	9.31%
Oct-19	2.36	1.33	3.6	3091	1744	4718	784	25.36%
Nov-19	0.94	0.68	1.26	1247	893	1641	178	14.27%
Dec-19	1.9	1.28	2.57	2489	1679	3361	460	18.48%
Jan-20	15.02	10.37	21.08	19662	13578	27578	4117	20.94%
Feb-20	10.21	7.02	13.61	13365	9192	17822	2462	18.42%
Mar-20	33.74	24.28	44.27	44146	31775	57936	6553	14.84%
May S01 20	25.17	16.61	33.56	32945	21735	43918	6020	18.27%
May S02 20	20.87	14.73	27.3	27296	19289	35742	4485	16.43%
Jun-20	40.87	32.36	49.04	53499	42359	64177	5732	10.71%
Jul-20	11.88	9.47	14.78	15547	12390	19329	1926	12.39%
Aug-20	32.19	28.15	36.55	42128	36841	47824	3025	7.18%
Sep-20	33.77	24.81	43.33	44194	32462	56716	6583	14.9%
Oct-20	3.75	2.99	4.59	4902	3921	6021	565	11.53%
Nov-20	3.34	2.18	4.74	4386	2846	6204	843	19.22%
Dec-20	14.26	10.22	19.55	18659	13374	25584	3473	18.61%
Jan-21	11.66	9.73	13.75	15250	12734	17990	1363	8.94%
Feb-21	6.19	3.96	8.69	8116	5177	11367	1578	19.44%
Apr S01 21	28.26	22.71	34.87	36970	29727	45635	4486	12.13%
Apr S02 21	72.45	49.61	97.54	94806	64933	127644	17830	18.81%

Razorbill	Adjusted Density Estimate (birds/ km2)	Adjusted Lower 95% CI (birds/ km2)	Adjusted Upper 95% CI (birds/ km2)	Adjusted Population Estimate (number)	Adjusted Lower 95% CI (number)	Adjusted Upper 95% CI (number)	Adjusted SD	Adjusted CV (%)
Survey
Mar-19	1.52	0.88	2.36	1985	1149	3078	530	26.7%
May-19	1.38	1.01	1.83	1812	1333	2399	313	17.27%
Jun-19	0.21	0.06	0.44	269	83	564	139	51.67%
Jul-19	2.49	1.53	3.59	3258	2006	4705	818	25.11%
Aug-19	1.99	1.37	2.7	2594	1787	3529	506	19.51%
Sep-19	1.61	1.16	2.08	2111	1527	2728	355	16.82%
Oct-19	1.12	0.56	1.82	1469	738	2387	409	27.84%
Nov-19	0.11	0.06	0.19	141	74	237	36	25.53%
Dec-19	0.48	0.26	0.77	632	336	1014	193	30.54%
Jan-20	1.85	1.13	2.71	2419	1470	3545	588	24.31%
Feb-20	1.34	0.9	1.83	1760	1179	2398	331	18.81%
Mar-20	6.98	4.9	8.91	9130	6427	11657	1480	16.21%
May S01 20	0.95	0.6	1.27	1249	782	1667	269	21.54%
May S02 20	0.68	0.4	1.07	894	524	1399	243	27.18%
Jun-20	0.94	0.66	1.25	1230	858	1637	221	17.97%
Jul-20	1.86	1.12	2.72	2420	1467	3559	641	26.49%
Aug-20	3.68	2.68	4.94	4820	3500	6459	861	17.86%
Sep-20	11.9	7.76	16.35	15587	10159	21408	3282	21.06%
Oct-20	1.13	0.59	1.76	1479	768	2305	350	23.66%
Nov-20	0.3	0.17	0.45	401	232	589	92	22.94%
Dec-20	1.66	1.04	2.29	2165	1366	3007	503	23.23%
Jan-21	4.45	3.46	5.82	5830	4529	7614	914	15.68%
Feb-21	1.42	0.84	2.05	1868	1101	2692	429	22.97%
Apr S01 21	3.83	2.43	5.44	5007	3172	7131	1001	19.99%
Apr S02 21	1.79	1.42	2.17	2335	1851	2845	262	11.22%

Puffin	Adjusted Density Estimate (birds/ km2)	Adjusted Lower 95% CI (birds/ km2)	Adjusted Upper 95% CI (birds/ km2)	Adjusted Population Estimate (number)	Adjusted Lower 95% CI (number)	Adjusted Upper 95% CI (number)	Adjusted SD	Adjusted CV (%)
Survey
Mar-19	1.34	0.95	1.84	1756	1247	2398	302	17.2%
May-19	2.24	1.77	2.69	2932	2321	3517	349	11.9%
Jun-19	0.32	0.16	0.53	434	219	692	136	31.34%
Jul-19	3.25	2.33	4.01	4246	3056	5250	655	15.43%
Aug-19	4.41	3.23	5.65	5770	4231	7386	922	15.98%
Sep-19	1.12	0.62	1.77	1463	805	2334	468	31.99%
Oct-19	0.3	0.19	0.43	393	246	567	91	23.16%
Nov-19	0.02	0.01	0.03	27	8	52	14	51.85%
Dec-19	0	0	0	0	0	0	0	0
Jan-20	0.06	0.02	0.09	70	35	116	28	40%
Feb-20	0.19	0.09	0.31	243	121	412	96	39.51%
Mar-20	0.68	0.32	1.09	900	407	1427	295	32.78%
May S01 20	1.85	1.1	2.57	2420	1428	3369	568	23.47%
May S02 20	0.65	0.47	0.84	842	617	1089	143	16.98%
Jun-20	0.81	0.52	1.09	1054	694	1435	227	21.54%
Jul-20	1.11	0.55	1.92	1445	723	2518	509	35.22%
Aug-20	2.1	1.55	2.68	2745	2025	3501	466	16.98%
Sep-20	12.48	10.47	14.74	16321	13707	19286	1749	10.72%
Oct-20	0.15	0.1	0.2	198	141	261	38	19.19%
Nov-20	0.14	0.09	0.19	176	116	238	41	23.3%
Dec-20	0.02	0.01	0.05	35	20	56	12	34.29%
Jan-21	0.02	0.01	0.05	31	19	57	13	41.94%
Feb-21	0.38	0.26	0.51	500	330	669	112	22.4%
Apr S01 21	1.04	0.7	1.48	1374	911	1935	289	21.03%
Apr S02 21	4.8	3.6	6.05	6280	4708	7927	1040	16.56%

Gannet	Density Estimate (birds/ km2)	Lower 95% CI (birds/ km2)	Upper 95% CI (birds/ km2)	Population Estimate (number)	Lower 95% CI (number)	Upper 95% CI (number)	SD	CV (%)
Survey
Mar-19	0.24	0.1	0.42	321	137	553	109	33.8%
May-19	0.75	0.48	1.07	980	631	1396	196	19.94%
Jun-19	1.4	1.06	1.8	1837	1388	2352	243	13.22%
Jul-19	3.55	3.06	4.05	4649	4001	5296	336	7.22%
Aug-19	3.84	3.06	4.8	5020	4011	6281	567	11.29%
Sep-19	2.58	2.11	3.03	3376	2758	3968	307	9.09%
Oct-19	0.83	0.67	1.02	1081	876	1329	123	11.34%
Nov-19	0.15	0.09	0.2	192	113	263	40	20.62%
Dec-19	0	0	0	0	0	0	0	0
Jan-20	0.01	0	0.02	8	0	25	8	99.09%
Feb-20	0.01	0	0.03	16	0	40	11	69.29%
Mar-20	0.23	0.12	0.38	304	154	492	89	29.04%
May S01 20	0.52	0.27	0.76	676	358	995	170	25.09%
May S02 20	1.14	0.72	1.69	1495	946	2218	329	21.97%
Jun-20	0.99	0.68	1.37	1302	885	1794	235	17.99%
Jul-20	3.4	2.87	3.96	4449	3751	5185	359	8.05%
Aug-20	2.52	1.97	3.06	3293	2583	4002	373	11.32%
Sep-20	1.45	1.13	1.77	1895	1486	2322	220	11.6%
Oct-20	0.79	0.59	0.99	1035	772	1296	137	13.21%
Nov-20	1.47	1.03	2.02	1919	1343	2644	325	16.9%
Dec-20	0.16	0.03	0.38	216	40	500	129	59.31%
Jan-21	0.09	0.04	0.13	114	54	177	31	26.84%
Feb-21	0.11	0.02	0.23	141	23	301	72	50.67%
Apr S01 21	0.56	0.42	0.72	738	555	937	95	12.83%
Apr S02 21	1.33	0.53	2.52	1745	700	3296	721	41.3%