Note that given the time that it takes to provide good critique, you'll get the best results with five or less images. That aside, C&C per req:
1. I like the image, especially the reflections. I would suggest that it could stand to be levelled in addition to either a brightening or cropping of the darkest area image left.
2. Nice, however does need to be levelled.
3. I like the composition of this; again a very dark area image left which is somewhat distracting. The use of a grad-nd filter to enhance the sky would have helped as well.
4. Very nice conversion, but the subject matter is less than exciting.
5. Very nice, well composed, but needs exposure correcting; the image itself is 1/3 - 1/2 underexposed and the bird over exposed (at least 2/3 stop over on the white plumae) and the vignette doesn't IMO enhance the image.
6. I like this, not sure if the angle works for me, but it's a nice image, with excellent potential for B&W conversion.
7. The best of the group IMO, very well done. Again, not fond of the vignette, and suggest cropping some of the foreshore image left off, but other than that, very good, almost Dickensian.
8. Nicely done, could stand to see the concrete brightened by 1/2 stop. Again a G-ND would have helped with sky and evening out exposure.
9, 11. Interesting, not my taste, but well done, though I think perhaps a tighter crop on the bird(s)?
10. Good idea, but rather mudde, somewhat over-exposed, and too much empty space.
11. Nice; good work with the sky, some dodging on the darker concrete would help.
Just my $00.02 worth - your milage may vary
~John