That first bird ... erm ... yes, he's of the kind (as to his looks) that makes you think "Only a mother can love this face"

. Sharp photo ... unfortunately too little headroom for his pretty (cough-cough) head.
The parrot is VERY colourful. Focus on the eye, good. Too little headroom ... erm: NO headroom for him AT ALL. Awww

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Meerkat and deer lack in focus, or focus is on the nose, not the eyes. Gorilla photo was taken in unfavourable light, his eyes don't spark, look all black and hollow, but I know that flash is not allowed as not to spook the animals, only here fill flash would have been helpful.
As to the photo of the child petting the deer ... that deer's head looks like it doesn't belong into the photo. Somehow... don't know why. Is it its size? It's blurriness. Can't tell. But that photo looks kind of "wrong".