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The association between the rate of advance in arrival dates into Iceland of six species of wader (whimbrel, N. phaeopus; redshank, T. totanus; oystercatcher, H. ostralegus; golden plover, P. apricaria; black-tailed godwit, L. limosa and snipe, G. gallinago) and the gap between arrival dates and laying dates (rs = −0.81, p = 0.05)
