. Siberia in Europe: a visit to the valley of the Petchora, in north-east Russia; with descriptions of the natural history, migration of birds, etc . is question might easily be settled. Itis obviously much easier to record the date of arrival of abird than of its departure. In the one case a single entry issufficient; in the other, memoranda may have to be dailyrecorded for weeks. At Valkenswaad, in Holland, I noticedthat the earliest migrants were those with the widest whose breeding-range extended to or beyond Britainwere the earliest to breed, whilst those whose eggs I wasmost
. Siberia in Europe: a visit to the valley of the Petchora, in north-east Russia; with descriptions of the natural history, migration of birds, etc . is question might easily be settled. Itis obviously much easier to record the date of arrival of abird than of its departure. In the one case a single entry issufficient; in the other, memoranda may have to be dailyrecorded for weeks. At Valkenswaad, in Holland, I noticedthat the earliest migrants were those with the widest whose breeding-range extended to or beyond Britainwere the earliest to breed, whilst those whose eggs I wasmost anxious to obtain, those whose breeding-range didnot extend to our islands, were very late in arriving. Itseems to be a curious fact that, as a general rule, though CHAP. XX. FACTS OF MIGRATION. 261 subject, no doubt, to many exceptions, the birds who havecome from tlie longest distance arrive the earliest. The factsof migration are, however, so many, and the theories whichthey suggest are so various, that we must bring this rambling,if not irrelevant, chapter to an end, and return to the narra-tive of our doings in the valley of the OLD RUSSIAN SILVER CROSS.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbirds, bookyear1880
