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62 
Teil C - Annex 
Table 4: Seasonal occurrence of seabirds in German waters (from Garthe et al. 2007 and 
unpublished. Data: FTZ Busum, Status: 30.07.2013). 
Art 
Spring/Return 
Summer/ 
Breeding period 
Autumn/ 
Migration 
Winter 
Red/Black-throated Diver 
01.03.-30.04. 
01.05.-15.09. 
16.09.-31.10. 
01.11.-29.02. 
Great crested grebe 
01.03.-15.04. 
16.04.-31.07. 
01.08.-15.11. 
16.11.-29.02. 
Red-necked grebe 
01.03.-30.04. 
01.05.-31.07. 
01.08.-15.11. 
16.11.-29.02. 
Horned grebe 
01.03.-15.05. 
16.05.-31.08. 
01.09.-30.11. 
01.12.-29.02. 
Fulmar 
16.03.-15.05. 
16.05.-31.08. 
01.09.-30.11. 
01.12.-15.03. 
Northern gannet 
01.03.-30.04. 
01.05.-31.08. 
01.09.-31.10. 
01.11.-29.02. 
Cormorant 
01.02.-31.03. 
01.04.-31.07. 
01.08.-31.10. 
01.11.-31.01. 
Common eider 
01.03.-30.04. 
01.05.-31.08. 
01.09.-30.11. 
01.12.-29.02. 
Long-tailed duck 
01.03.-30.04. 
01.05.-30.09. 
01.10.-30.11. 
01.12.-29.02. 
Black scoter 
01.03.-31.05. 
01.06.-30.09. 
01.10.-30.11. 
01.12.-29.02. 
Velvet scoter 
01.03.-31.05. 
01.06.-31.08. 
01.09.-30.11. 
01.12.-29.02. 
Red-breasted merganser 
01.03.-30.04. 
01.05.-31.08. 
01.09.-30.11. 
01.12.-29.02. 
Little gull 
01.03.-31.05. 
01.06.-15.07. 
16.07.-31.10. 
01.11.-29.02. 
Black-headed gull 
01.03.-30.04. 
01.05.-30.06. 
01.07.-31.10. 
01.11.-29.02. 
Common gull 
01.03.-15.05. 
16.05.-15.07. 
16.07.-31.10. 
01.11.-29.02. 
Lesser black-backed gull 
16.03.-15.05. 
16.05.-15.07. 
16.07.-31.10. 
01.11.-15.03. 
Herring gull 
01.03.-15.05. 
16.05.-15.07. 
16.07.-31.10. 
01.11.-29.02. 
Greater black-backed gull 
01.03.-30.04. 
01.05.-31.07. 
01.08.-31.10. 
01.11.-29.02. 
Kittiwake 
01.03.-15.05. 
16.05.-31.07. 
01.08.-31.10. 
01.11.-29.02. 
Sandwich tern 
16.03.-15.05. 
16.05.-15.07. 
16.07.-15.10. 
16.10.-15.03. 
Common tern 
01.04.-15.05. 
16.05.-15.07. 
16.07.-15.10. 
16.10.-31.03. 
Arctic tern 
01.04.-15.05. 
16.05.-15.07. 
16.07.-15.10. 
16.10.-31.03. 
Common Guillemot 
01.03.-15.04. 
16.04.-15.07. 
16.07.-30.09. 
01.10.-29.02. 
Razorbill 
01.03.-15.04. 
16.04.-30.06. 
01.07.-30.09. 
01.10.-29.02. 
Black guillemot 
01.03.-30.04. 
01.05.-31.08. 
01.09.-30.11. 
01.12.-29.02. 
3.2 Migratory birds 
See table 3.2.1: Radar survey. 
Minimum requirements of optical systems for survey of birds in the rotor area of off 
shore wind turbines 
Recommendation 
Optical systems are camera systems with automatic recording function, which can detect fly 
ing small birds day and night and the performance capability of which is verifiable. Image 
resolution should be at least 768 x 576 pixel (PAL) at a minimum of 15 images per second. The 
aperture angle must be such that the targeted species in the target distance can be depicted 
with a sufficient number of pixels. Continuous measurements must be carried out at least dur 
ing the main migration periods in spring and autumn.
	        
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