Sorry, didn’t see this until just now and I can’t do links on this stoopid smart phone! Typing in what @oregonkat suggested should take you right there. The “search” box is right up in the tabs. And thanks for the tag!
The link to the article's by Blooie: http://www.backyardchickens.com/t/956958/mama-heating-pad-in-the-brooder-picture-heavy-update
And now that I'm on my computer where I know how to post links, here's another! http://www.backyardchickens.com/a/yes-you-certainly-can-brood-chicks-outdoors