Marsh Sandpiper or Greenshank (1 Viewer)

While photographing wagtails coming to roost at a sandpit in the Netherlands this weekend, a sandpiper flew in and landed just when it was getting dark. It called very different from the Greenshanks I usually see and also appeared to be noticably smaller than the Greenshank I had been watching just a few minutes before. It's bill appeared to be slightly curved upwards and the head fairly dark and streaked, but unfortunately I could not make out any further details regarding plumage. I took a few pictures, but before I could move in closer to study the bird in more detail it flew up and disappeared.

I did consider Marsh Sandpiper at the time due to the strange call and small posture, but the bird did not strike me as being particularly long-legged or needle-like billed and I also couldn't quite match the plumage and bill shape. Having only limited (<10 ind.) experience with Marsh Sandpipers, and feeling uncomfortable with calling it a smallish, aberrantly calling Greenshank, I would be interested to learn other people's opinions on this bird. Unfortunately the pictures provide very (too?) little detail, but I hope someone with more extensive experience with both species may be able to assess relative bill length etc...

Sincerely,
Luten

Greenshank (bill too long/stout for marsh sand).

Greenshank indeed.

It´s a Greenshank. Note the little curved bill on this bird.

When you see your first Marsh you'll know. You will see it's so very much paler and slimmer in apperance.