Siberian chiffchaff Siberian chiffchaff Siberian chiffchaff ("Phylloscopus (collybita) tristis") is a leaf-warbler which is usually considered a subspecies of the common chiffchaff, but may be a species in its own right. Siberian chiffchaff breeds in Siberia east of the Pechora River and winters in the lower Himalayas. It is also regularly recorded in western Europe in winter, and it is likely that the numbers involved have been underestimated due to uncertainties over identification criteria, lack of good data and recording policies (Sweden and Finland only accept trapped birds). Because of their unfamiliar appearance, British records in the 1950s and 1960s were originally
Handbook of the Birds of the World to Scientific Names in Ornithology'. A list of volumes of the "Handbook of the Birds of the World" produced to date is as follows: This volume was published in 1992. Unlike subsequent volumes, it does not have an introductory essay; instead, it has a 38-page overview by Eduardo de Juana of the biology of birds and a foreword welcoming the HBW project, by Christoph Imboden. Groups covered in this volume are as follows: This volume was published in 1994. It has a foreword by Walter J. Bock on the organization of information in HBW. Groups covered in this volume are