Thanks for sharing: I like to do Sherlock with the shore birds - some of them are really difficult and ID by photo could be frustrating!
First two are easy: Sanderling and Rudy Turnstoune.
The third one got my attention (you posted the same species at BIF I think). I will come to this one after few (sluggish

!) strokes...
Fourth - I hardly can comment...
And I don't really care about the Cormorant.
The third one looks to me like a Semipalmated Sandpiper: black legs (eliminating the Stints with yellow legs). Still there are 4 more Stints with black legs

rolleyes

! BTW I assume it's a Stint comparing the size of the bird with the background and it could be misleading (if you can help with this?)! I can't see the feet - for webbing (if I could the list would be shorten to two species only : Semipalmated and Western!). The head looks more elongated then the Western Sandpiper. For the Red-necked Stint the bill is not enough deep and the primary projection is not long (at least judging from your photo - different angles are welcome!!!).
Now it's a war between the Semipalmated and the Little Stints. The Little should have longer primary projection and unwebbed feet (that I can't see). On other hand the bird on your photo has a little bit more pointed bill than I wouldn't expect from the Semipalmated!
And: these are just preliminary conclusions!
Few more photos like these and my hair will get from silver to completely white

!