Sanderling
Calidris alba

– medium-sized wader, size of Dunlin
– nocturnal/diurnal migrant
– migrates singly or in small flocks sometimes mixed with other Calidris
– BREED plumage very different from NBREED (not yet photographed in flight), rarely seen on migration


Sanderling Calidris a. alba, 1CY
BIF2053, 02/10/2012, Baltic Sea, offshore, Martin Grimm
1CY compared to other Calidris very contrasting dark-grey and white with extensive white head, shortest bill of the larger Calidris


Sanderling Calidris a. alba, AD NBREED
Ruddy Turnstone Arenaria interpres, NBREED
BIF2047 09/11/2013, Helgoland, Germany, Mathias Putze
AD NBREED dark plumage parts black thus even more contrasting than 1CY


Sanderling Calidris a. alba, NBREED
Ruddy Turnstone Arenaria i. interpres, AD NBREED
BIF2048 09/11/2013, Helgoland, Germany, Mathias Putze
in NBREED grey back strongly contrasting to black and white wings


Sanderling Calidris a. alba, 1CY
BIF2049 21/09/2016, Besh Barmag, Azerbaijan, Michael Heiß
1CY paler than NBREED and with hint of throat-collar and no obvious contrast from back to upperwing


Sanderling Calidris a. alba, 1CY
BIF2050 16/09/2016, Besh Barmag, Azerbaijan, Michael Heiß


Sanderling Calidris a. alba, 1CY
BIF2051 16/09/2016, Besh Barmag, Azerbaijan, Michael Heiß


Sanderling Calidris a. alba, 1CY
BIF2052 18/10/2017, Helgoland, Germany, Roland Neumann
more white in upperwings than other Calidris


Sanderling Calidris a. alba, 1CY
Dunlin Calidris alpina ssp., 1CY
Ruddy Turnstone Arenaria i. interpres NBREED
BIF2054 18/10/2017, Helgoland, Germany, Roland Neumann
same size as Dunlin but note clean white underside and colder tones


Sanderling Calidris a. alba, 1CY
Ruff Calidris pugnax, 1CY M
Dunlin Calidris alpina ssp., 1CY
Common Ringed Plover Charadrius hiaticula ssp., AD, 1CY
Little Stint Calidris minuta, 1CY
Bar-tailed Godwit Limosa lapponica ssp., 1CY
BIF1977, 21/09/2016, Besh Barmag, Azerbaijan, Michael Heiß
in mixed flocks (e.g. the lowest bird to the right) stands out because of completely white underside and dark upperwing, shorter bill than Dunlin


Sanderling Calidris a. alba, call in flight
BIF2074, 26/09/2014, Prerow, Germany, Patrick Franke


Sanderling Calidris a. alba, calls in flight
BIF2075, 26/09/2014, Prerow, Germany, Patrick Franke


Sanderling Calidris a. alba, calls in flight
BIF2076, 26/09/2014, Prerow, Germany, Patrick Franke

voice:
– in flight usually a single, metallic call like ‘wink’ or ‘wit’
– quite variable, fast monophonic finch-like upslur (BIF2074, BIF2076) or rather complex shapes (BIF2075, BIF2076)

comparison species:
Red Knot (v)
Curlew Sandpiper
Dunlin
Little Stint

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