Ideas are great, and there are a lot of good words spoken here, I'd like to see more pictures though. For those of us learning the ropes pictures can still be the best way to illustrate a point.
I would tend to agree with you, perhaps what is useful is not just for people to post pictures, but to describe how the picture was actually taken (what is the back story - how long was the photographer say hanging around, how did the picture happen). National Geographic is not too bad for that as there is some story to some of the pictures, the BBC wildlife book also gives some backstory to many of the images.
Going back to some of your pictures:
1/ Try and get the front, or front 3/4 of the animals. You have a few images from behind which are so-so to look at.
2/ You have a nice image of a swan, however, the reflection is cut off at the bottom. Also, the feathers are slightly blown out (so reducing exposure 1/2 - 1 stop may improve detail in the feathers). Generally, when photographing birds I found a need to be especially careful of exposure so as not to loose detail (perhaps 1 stop to preserve detail).
3/ You have quite a few pictures with foreground noise (sticks, twigs, posts, leaves) between yourself and the subject. You need to pay particular attention to the sight lines between yourself and the subject you are focusing on, sometimes foreground objects make good composition, sometimes they are just distracton - if necessary think about how to work them into, or out of the frame constructively.
Out of all the images I quite like 0797 - the ape/monkey with the red face. You captured the furtive look quite nicely and the red/green colours lift the image from being a bit grey. The other which could work out nicely is 0838 with the two monkeys/chimps - perhaps cropping a little more tightly to bring focus into their expression (even going as far as just cropping tightly on the upper body head); again, with this picture you have the distracting log in the background which could have been avoided.
The final point I would make is learning to post process the images to give some form of visual consistency to your work. This is a little bit more difficult to comment on without taking each picture one by one (and even then you are going to get a multiplicity of comments) - but suggest you look at cropping, sharpening, application of curves/levels and other processing techniques to really bring out the textures/colours of what you are shooting. Some of the pictures are a bit flat (lack contrast/punch) which could be jazzed up a bit in an image editing program.
Hope that helps a bit more.