The nightjars - measuering Primaries

From the just sent paper please note the "easy" separation of the poliocephalus , ruwenzorii , guttifer by measureing the P's!!!

P10-P8 are all long in guttifer and the (P7 and) P6 are shorter.

P10 P9 P8 P7 P6

C. poliocephalus 143.6±4.5 (129-153) 60 152.3±4.1 (139-162) 57 152.3±4.3 (137-162) 59 145.6±4.7 (132-158) 60 124.5±4.1 (115-134) 60

C. r. ruwenzorii 145.3±4.8 (130-155) 40 154.5±4.9 (141-163) 40 154.8±4.7 (144-163) 40 147.3±4.9 (136-156) 40 126.8±5.0 (116-139) 39

C. r. guttifer 146.5±2.9 (141-150) 8 155.6±3.1 (151-162) 8 156.1±2.6 (151-161) 9 145.6±3.5 (139-151) 8 123.0±3.3 (116-127) 9




Louis