Depending on the browser you are using, there are free adblocking downloads that can be employed. Another option is to become a paid member ("Golden Feather") of the site which allows you to opt for no ads for the duration of your membership.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Please see the information here: https://www.backyardchickens.com/a/troubleshooting-byc-problems-bugs-error-messages-other-issues
If none of those things help, please come back to this post and reply with all the information requested in that article above, especially:
1) Which browser and version are you using (eg., Firefox 3.5.9, Internet Explorer 7, etc.)
2) Have you deleted your internet cache / browser history of files and tried again?
3) Have you tried a different browser? This allows you to test if it is a browser specific problem vs. a computer / network problem. We suggest Google Chrome or Firefox.