Short-billed Dowitcher Limnodromus griseus

An extremely rare vagrant to Europe with just one accepted record from the UK. The identification of Dowitchers is very difficult, especially adults, and I am not 100% certain about the identity of the bird shown below. As always, comments welcome!

Short-billed Dowitcher, Bacon Street, 19-Apr-05 Short-billed Dowitcher, Bacon Street, 19-Apr-05
Short-billed Dowitcher, Bacon Street, 19-Apr-05  

probable Short-billed Dowitcher, Bacon Street, San Diego (California, USA), 19th April 2005 - I believe this is a Short-billed Dowitcher due to the breast sides appearing more spotted than barred, however I am not 100% certain. Some of the scapulars and wing-coverts appear to show the pattern typical of Short-billed, with the white tips extending up the sides of the feather merging into the orange sides, but others are less convincing (to me at least). The loral angle is perhaps a little shallow suggesting Long-billed and the black tail bars are rather wide (although these are variable on both species). It was in estuarine habitat which favours Short-billed, but migrants can turn up anywhere. Comments welcome.