Red Knot
Calidris canutus

>> GENERAL >>>>>

– medium-sized wader, considerably larger than Dunlin
– nocturnal/diurnal migrant
– migrates singly or in small to medium, dense flocks
– regularly mixed with other waders

>> VISUAL ID >>>>>


Red Knot Calidris c. canutus, 1CY
BIF1102, 11/09/2008, Rügen, Germany, Mathias Putze


Red Knot Calidris c. canutus, 1CY
BIF1103, 11/09/2008, Rügen, Germany, Mathias Putze


Red Knot Calidris c. canutus, AD BREED
BIF0549, 01/07/2015, Rügen, Germany, Mathias Putze


Red Knot Calidris c. canutus, AD BREED
BIF0546, 01/07/2015, Rügen, Germany, Mathias Putze


Red Knot Calidris c. canutus, AD BREED
BIF0547, 01/07/2015, Rügen, Germany, Mathias Putze


Red Knot Calidris canutus ssp., NBREED (third from left)
Great Knot Calidris tenuirostris, NBREED
BIF1813, 24/01/2013, Pak Thale, Thailand, Mathias Putze


Red Knot Calidris canutus ssp., NBREED (lowest bird)
Great Knot Calidris tenuirostris, NBREED
BIF1812, 24/01/2013, Pak Thale, Thailand, Mathias Putze


Red Knot Calidris canutus islandica, BREED
BIF3008, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandica, BREED
BIF3008, 28/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandica, BREED
BIF3006, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandica, BREED
BIF3005, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandica, BREED
BIF3004, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandica, BREED
BIF3009, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris c. canutus, 1CY
Ruddy Turnstone Arenaria i. interpres

BIF1104, 11/09/2008, Rügen, Germany, Mathias Putze


Red Knot Calidris c. canutus, 1CY
BIF1105, 11/09/2008, Rügen, Germany, Mathias Putze


Red Knot Calidris canutus islandica, BREED
BIF3013, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandica, BREED
BIF3012, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandica, BREED
BIF3011, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandica, BREED
BIF30130, 29/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris c. canutus, AD BREED
BIF0548, 01/07/2015, Rügen, Germany, Mathias Putze


Red Knot Calidris c. canutus, AD BREED
BIF0546, 01/07/2015, Rügen, Germany, Mathias Putze


Red Knot Calidris c. canutus, AD BREED
Grey Plover Pluvialis sqatarola, AD BREED
BIF0685, 01/09/2015, North Sea, offshore, Mathias Putze


Red Knot Calidris c. canutus, AD BREED
Grey Plover Pluvialis squatarola, AD BREED
BIF0686, 01/09/2015, North Sea, offshore, Mathias Putze

>> ACOUSTIC ID >>>>>

– rather uniform overslurred double-syllables
– elements start with slow increase, end with brief decrease in frequency
– monophonic with inharmonic partials
– very similar to Bar-tailed Godwit, but with longer elements but shorter gap in between


Red Knot Calidris c. canutus, call in flight
BIF1715, 06/03/17, North Sea, offshore, Patrick Franke


Red Knot Calidris canutus islandicus, call in flight
BIF2993, 30/05/2019, Langanes, Iceland, Patrick Franke


Red Knot Calidris canutus islandicus, call in flight
– overview –
BIF2993, 30/05/2019, Langanes, Iceland, Patrick Franke

>> COMPARISON SPECIES >>>>>

Sanderling (v)
Curlew Sandpiper (v)
Bar-tailed Godwit (a)

#shorebird #wader

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