Good story, Pnina. Well done.
A few minor editing comments:
It was early morning at the wildlife hospital.
=> Starting with a vague “it” isn’t great. Try: Picture an early morning at the wildlife hospital.
In one cage, there were 7 hungry house sparrows.
=> You can make this more vivid, e.g.: In one cage, 7 hungry house sparrow were impatiently hopping around.
but still looked very weak
=> Remove “very”, or go for a stronger word: sluggish, wobbly, sickly, ready to drop.
These are just minor comments. You kept me reading on 🙂
Enchant readers. Woo customers. Win business.