1
APPENDIX C. Local diet (% of prey mass), adapted from Leopold and others (2004) and
references herein, of dominant estuarine birds in the Wadden Sea, viz. Oystercatcher
Haematopus ostralegus (623 g), Herring Gull Larus argentatus (1110 g), Curlew Numenius
arquata (885 g), Shelduck Tadorna tadorna (1125 g), Dunlin Calidris alpina (59 g), Bar-tailed
Godwit Limosa lapponica (410 g), Knot Calidris canutus (153 g), Grey Plover Pluvialis
squatarola (247 g), Redshank Tringa totanus (120 g), Turnstone Arenaria interpres (137 g),
Sanderling Calidris alba (72 g), Ringed plover Charadrius hiaticula (60 g), Greenshank Tringa
nebularia (208 g), and Spotted Redshank Tringa erythropus (164 g). Bird species that prey
mostly on suspension-feeding bivalves are represented by black dots, those that predominantly
take deposit-feeding benthic prey are represented by grey dots, and birds that mainly rely on
other prey items, such as carnivorous benthos and fish, are indicated by white dots. Speciesspecific mass (in grams) was derived from Del Hoyo and others (1992, 1996).
2
Suspension-feeding prey
Oystercatcher
Herring Gull
50%
50%
Turnstone
Knot
Shelduck
Grey Plover
& Sanderling
Curlew
Dunlin
Redshank
Bar-tailed Godwit
Ringed Plover
50%
Deposit-feeding and mixed-feeding prey
Spotted Redshank
Greenshank
Other prey items
Supplementary FigureC1 (Philippart et al.)