Here are some great places to find contemporary poetry to serve as a springboard for your animation script. You can also browse in the general poetry section -- PS 591 to PS 615. If you are looking for a specific poet's work, search their name as a keyword in the library catalog.
The following journals and magazines contain short stories & poems. Many are available in print (current magazine area) and some are available electronically. Use Journal Finder to search for additional magazine and journal titles.
Fence (University of Albany & New York State Writers Institute)
Granta: The Magazine of New Writing
New York Times Magazine
Orion - Nature/Culture/Place