作者：
Grant, MC [1]
;
Cowie, N [2]
;
Donald, C [3]
;
Dugan, D [4]
;
Johnstone, I ;
Lindley, P ;
Moncreiff, R ;
Pearce-Higgins, JW ;
Thorpe, R ;
Tomes, D
作者单位：
RSPB N Wales Off, Bangor LL57 2DW, Gwynedd, Wales.
[1]
RSPB Scotland, Inverness IV2 3BW, Scotland.
[2]
RSPB Scotland, Edinburgh EH4 3TP, Midlothian, Scotland.
[3]
RSPB Scotland, Abernethy Forest Reserve, Forest Lodge PH25 2EF, Nethybridge, Scotland.
[4]
发布时间
2013-11-20
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