BIOLOGICAL STATIONS. 61 
preferred by certain species for nesting in; at what height are 
the nests found; and of what materials are they composed ? 
(8) What species have built abnormal nests, or in unusual 
places? What cause can be assigned for this? (9) Have you any 
large breeding-colonies of Herons, Gulls, Sea-swallows, Rooks, 
Sand Martins, &c., and if so, in what localities? How many 
pairs are there on an average in these colonies, aud do they 
increase or decrease in numbers ? 
VY. All kinds of biological observations, as well as notes on 
moulting, food, utility or otherwise, song, &c.; even single 
instances are useful. 
After the Ninth Annual Meeting of the General German 
Ornithological Society at Berlin, this Committee hopes to publish 
charts of the geographical distribution of the birds of Germany, 
and possibly of existing routes of migration. The following 
species will be taken first, and any reliable information as to their 
place of breeding, on the basis of the above instructions, will be 
acceptable :— 
Lesser Kestrel - - - - Cerchneis cenchris, Naum. 
Black Kite - - - - - Milvus ater, Gmel. 
Short-toed Eagle - - - - Circaetus gallicus, Gmel. 
Eagle Owl - - - - - Bubo maximus, Sibb. 
Roller - : - - Coracias garrula, Linn. 
Grey-headed Green Woodpeske - Gecinus canus, Gmel. 
Black Woodpecker — - - Dryocopus martius, Linn. 
White-backed Woodpecker - - Picus leuconotus, Bechst 
Starling - - - - - Sturnus vulgaris, Linn. 
Carrion Crow” - - ~ - Corvus corone, Linn. 
Hooded Crow” - - - - »  cornix, Linn. 
Rook - - - - - - »  Jfrugilegus, Linn. 
Lesser Grey Shrike - - - Lanius minor, Linn. 
White-necked Flycatcher - - Muscicapa albicollis, Temm. 
Red-breasted Flycatcher — - - af parva, Linn. 
Goldcrest - - - - - Regulus cristatus, Koch. 
Firecrest - - - - - »  tgnicapillus, Brehm. 
Bonelli’s Warbler - - - Phyllopneuste bonellii, Vieil. 
Great Reed Warbler - - - Acrocephalus turdoides, Meyer. 
Grasshopper Warbler - : - Locustella nevia, Bodd. 
River Warbler - - - - » fluviatilis, Meyer. 
Barred Warbler - - - - Sylvia nisoria, Bechst. 
Fieldfare - = - - - Turdus pilaris, Linn. 
