San Antonio Zoo by TexasDave
A nice sized zoo that is in the process of being up-dated and up-graded. They have a section where Australian lorries (a species of parrot) fly free and for $1 you can buy a small cup of nectar. You go into the enclosure, open the cup, and, Viola! there are half dozen lorries on your hand, arm, head, etc. looking for a drink.There is also a butterfly enclosure.
Admission: Adults $8, children 3-11, $6.
And there is a $1 off p/person coupon you can download from their website.