My chicks walked right up to a hawk (it did not end well)

[AGeese]

Use this info as you wish, 1/4" didn't stop a coon from taking one of my pullets. This was brand new 23 gauge on a new run. Pulled the welds apart in the center. I only use 1/2" or thicker wire now. I don't trust 1/4 " much more than standard chicken wire. It's possible it could have been a bad batch, but the little extra cost is a little more security and peace of mind,

I'll have to check what I have now I'm wondering. I have seen small sections with unwelded wire which is an obvious defect, but not many.

 

[BigBlueHen53]

cover everything in 1/4" hardware cloth and/or double fences.

I do not believe you have to cover everything with hardware cloth ... but the bottom two feet of whatever you keep them in, is definitely a good idea. My guess is the hawk snatched your chicks at ground level, as most predators would. So add safety measures in that area, at least.