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. 2005 Mar 10;1(1):68–71. doi: 10.1098/rsbl.2004.0265

Table 1.

Analyses of variation in reproductive success (estimated as number of offspring fledged, standardized by year) of Ficedula flycatchers in relation to species identity (collared or pied flycatcher) and timing of breeding (laying date, standardized by year). (Model F3,6492=105.29, p<0.0001.) SS, sums of squares.

source d.f. SS F p
species 1 39.624 9.536 0.002
laying date 1 71.564 17.223 <0.0001
laying date×species 1 36.712 8.836 0.003