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
– 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, AD 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
– 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
– about 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


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

#shorebird #wader

#ornithology #birdmigration #birdID #birdguide #birding #birdwatching #birdsound #westernpalearctic #europe #vismig #flightcalls #middleeast #northernafrica #workinprogress