cs_chickenrun by L. Duke
http://www.LDuke.com

Story:

The missing chickens from cs_italy have been found!
Terrorists are holding the chickens at an abandoned 
area in the industrial district.

Counter-terrorists: Rescue the chickens. You'll have to
power up the building by starting the generator at site
A or at site B. After 30 seconds the building power will
be on-line and you can use the controls to release the
chickens.

Terrorists: Prevent the counter-terrorists from rescuing
the chickens.