. Animal Life and the World of Nature; A magazine of Natural History. I VI -> JLbl H VICHT-D irm. NIGHTJAES THEEE DATS OLD. 93 94 Animal Life an existing slight depression willbe utilised. In such a situation itwill be evident that, as in the case(jf the partridge and other groundbirds, the individual that does notclosely assimilate with its environ-ment runs considerable risk of beingseen and killed; so that ,any ofthese birds varying towards moreconspicuous colouration stands littlechance of transmitting the variationto another generation. On the otherhand any variation that brought onein
. Animal Life and the World of Nature; A magazine of Natural History. I VI -> JLbl H VICHT-D irm. NIGHTJAES THEEE DATS OLD. 93 94 Animal Life an existing slight depression willbe utilised. In such a situation itwill be evident that, as in the case(jf the partridge and other groundbirds, the individual that does notclosely assimilate with its environ-ment runs considerable risk of beingseen and killed; so that ,any ofthese birds varying towards moreconspicuous colouration stands littlechance of transmitting the variationto another generation. On the otherhand any variation that brought oneinto yet closer harmony with itssurroundings would make it morecertain than its fellows of rearingits young without disturbance. This protective colourationbegins at the very beginning. Theaverage rambler across the moormight see the nightjars eggs closeto his feet, but he is not likelyto take them for anything butwhitish stones. I need not attempta description of these eggs and theirmarkings, for the photograph givesa better idea than my words will only say that the groundcolour is white,
Size: 1451px × 1722px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1902
