Slickr Gallery is a bandwidth-friendly AJAX photo gallery plugin for WordPress. It allows you to pull your Flickr-hosted photos into a gallery section of your blog, as well as easily add Flickr-hosted images to your posts and pages. It is especially useful for people with many Flickr albums/photos. All code is valid xhtml.
Slickr Gallery needs a Lightbox plugin to work properly. Demo

Installation & usage:

1. Download Slickr Gallery, and extract to a local folder.
2. Upload slickr folder to wp-content/plugins/ folder.
3. Activate from the plugin page in WordPress Admin Panel.
4. Go to options panel and make changes as per your requirement.

Slickr Gallery -Home Page

Slickr Gallery Ajax, WordPress, Plugin