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Providing evidence to improve practice

Individual study: The effect of translocation of deer mice Peromyscus maniculatus elusus on predation of eggs of Xantus's murrelet Synthliboramphus hypoleucus scrippsi on Santa Barbara Island, California, USA

Published source details

Millus S.A., Stapp P. & Martin P. (2007) Experimental control of a native predator may improve breeding success of a threatened seabird in the California Channel Islands. Biological Conservation, 138, 484-492


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

Reduce predation by translocating predators Bird Conservation

A before-and-after trial on Santa Barbara Island, California, USA (Millus et al. 2007), found that the proportion of Xantus's murrelet Synthliboramphus hypoleucus eggs predated by mice was significantly lower in 2004, when approximately 1,650 deer mice Peromyscus maniculatus elusus (endemic to the island) were translocated away from the colony, compared to the 1993-2005 average, excluding 2004 (21% of 73 eggs predated vs. an average 37% of 64). In addition, the productivity/nest was higher (1.11 vs. 0.93), but hatching success was not significantly different (56% vs. 54%).