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(WP 3.5.1)

My blog has a header picture showing its name. But for some reason exactly one post shows a picture in the header which is actually used within the post itself.

http://www.joyofdata.de/blog/frequency-of-character-combinations/

I don't even know how I would acomplish such feat if I wanted - given that the header code as far as I know is included from header.php and hence keeps the same references in every single post...

How do I find out what the reason is, so I can change the header image back to the right one !?


enter image description here


enter image description here

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Is this an unmodified twentyeleven theme? functions.php right out of the box? –  vancoder Feb 27 '13 at 22:40
    
does that post have a featured image? with the dimensions larger than the header dimensions? –  Michael Feb 27 '13 at 23:13
    
I really like this header image. :) Is there any function in your theme that sets the first post image as featured image? –  toscho Feb 28 '13 at 8:53
    
@vancoder: yes, 20-11 out of the box –  Raffael Feb 28 '13 at 10:14
    
@Michael: that was it! chose a small featured image and the header is back to normal. If you make an answer out of it, I can confirm it. –  Raffael Feb 28 '13 at 10:18
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1 Answer

up vote 2 down vote accepted

in Twenty Eleven, any featured image in a post or static page, with image dimensions larger than the size of the header image - 1000px width in the unedited theme - will automatically get used for the header image.

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