I have a suggestion for a decoration or two!
Weaver birds & their nests!

The Masked Weavers (Southern Masked, Lesser Maskeds) and Village Weavers love building grass-woven nests from tree limbs over water. ... could see perhaps a branch hanging over the lion with the bird and a nest or two!





There are also the Red-Billed Buffalo Weavers, which make more messy stick nests in trees by dams/over water.




I could definitely see a neat decor with a tree and a few nests!

Or it could even be a background with the water underneath :)