The first two are just too cluttered to get a good view of the birds in the photos - the flowers and vegetation hide the birds from the viewer. The third one I like, it is reminiscent of a lot of the times you do see crows as they are often on the pavement or sidewalk looking for something to eat. The last one is not bad, except the red flowers do provide an unfortunate distraction from the main subject - the dove.
WesternGuy
P.S. One request - could you please number your images as this makes it easier for a reviewer to refer to them in your posting - thanks.