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. 2014 Jun 3;9(6):e98562. doi: 10.1371/journal.pone.0098562

Figure 1. Winter survey sites for colour-ringed shags.

Figure 1

Black points denote positive survey sites, where at least one adult colour-ringed shag known to have bred on the Isle of May was resighted in at least one winter 2009–2012. Sites are defined as roosts separated by ≥1 km.