"Oologia Neerlandica": Eggs of Birds Breeding in the Netherlands, Volume 1

13 days 13.9 millimetres aberration after-set ALAUDIDAE alba April-July ash-grey atricapilla Average dimensions Average weight Avifauna Neerlandica blue bluish green bluish white Breeding season brownish grey built of vegetable bushes Calamodus canorus-eggs cloudy markings Colour of spots Colour of surface consists of vegetable CORVIDAE dark brown darker dull Duration of incubation eggs lie eggshell Family feathers frequently FRINGILLIDAE genus gram horsehair Hypolais JOHN CRERAR LIBRARY lime layer lined with hair little hollow Locustella lying deeper May-July May-June Metres millimetres Motacilla flava MOTACILLIDAE MUSCICAPIDAE musicus nest Number of eggs oblong ovoidal occur olive brown oocyan oologically PARIDAE phoenicurus pigment Plate reddish brown rubecula rusty red schoenobaenus set of eggs Shape short ovoidal shrubs Site of nest slightly Snouckaert sometimes specially characterized species speckles strepera surface of shell Sylvia SYLVIIDAE Texture of shell thicker end THIENEMANN tint TURDIDAE Turdus usually varying vegetable materials weight of shell white ground colour wool