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Providing evidence to improve practice

Individual study: Song sparrows in restored riparian habitat exhibit reduced nesting success and lower clutch size than in natural stands

Published source details

Larison B., Laymon S.A., Williams P. & Smith T.B. (2001) Avian Responses to Restoration: Nest-Site Selection and Reproductive Success in Song Sparrows. The Auk, 118, 432-442

This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Restore or create forests Bird Conservation

A replicated, controlled study from May-June in 1989-1994 in riparian forest in California, USA (Larison et al. 2001) found that song sparrow Melospiza melodia nesting success, clutch size and density were lower in three restored sites, compared to four natural, mature sites (controls) and one naturally regenerating site (average of 1.5 pairs/ha for regenerating forest vs. 4 pairs/ha for mature forest and 12 pairs/ha for the naturally regenerating site). No differences in nestling mass or fledgling rate were found among stands.