. Oologia neerlandica : eggs of birds breeding in the Netherlands . low in dune sand, mostly under theshelter of sand-elymus plants and usuallywith a lining composed of vegetablematerial. (Breeds in colonies). generally 3. May, June. about 4 weeks. Family LARIDAE. Larus canus L. - Common Gull. (Plate 164, fig. a—d).(Snouckaert: Avifauna Neerlandica, p. Ill, N°. 265). Colour of surface of shell: Colour of spots: Average dimensions:Average weight of shell:Texture of shell:Shape: Nest: Site of nest:Number of eggs:Breeding season:Duration of incubation: olive brown, olive green, olive yellow, orol
. Oologia neerlandica : eggs of birds breeding in the Netherlands . low in dune sand, mostly under theshelter of sand-elymus plants and usuallywith a lining composed of vegetablematerial. (Breeds in colonies). generally 3. May, June. about 4 weeks. Family LARIDAE. Larus canus L. - Common Gull. (Plate 164, fig. a—d).(Snouckaert: Avifauna Neerlandica, p. Ill, N°. 265). Colour of surface of shell: Colour of spots: Average dimensions:Average weight of shell:Texture of shell:Shape: Nest: Site of nest:Number of eggs:Breeding season:Duration of incubation: olive brown, olive green, olive yellow, orolive grey, i]i various shades; almost alwaysof an oily gloss. blackish brown, mostly of a round shape;underlying spots show through grey; themarkings are as a rule spread fairly evenlyover the whole egg and rather frequentlyform a zone at the big end. 58 X 41 millimetres. grams. as in argentatus. mostly ovoidal. mostly constructed rather strongly of vege-table material. on the ground. (Breeds in colonies). 2-3. May, June. about 4 weeks. 160 < a S< 6 ^. u S c :s ;-■ 03 CO 3 cEf -J 161 /> # iiuitm,. ■*■■„ V UJ < < E as J3u cc:a<-< 03 c» a ■♦^ c 09 % 162
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Keywords: ., bookauthorpeltlech, bookcentury1900, bookdecade1910, bookyear1911
