2. The image of the snow made arctic hare is a portrait photo. The script turns the photo unwanted to landscape format.

I can't find any EXIF or other meta data in that image file, only a JPEG comment saying
CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 70

Here are some images in portrait orientation, which displayed corretly in my earlier trials (No. 2):

Post script:
In theses cases, there also no EXIF date in the image files used; obviously it is the Wikimedia software creating scaled down images which is deleting all those informations. And it creates a JPEG comment like this for the first image above:

File source: http://commons.wikimedia.org/wiki/File:Hannover-Hbf_Aufgang-zu-Gleisen-7-und-8_LWS95.JPG and this original file does contain all the EXIF and IPTC data which my camera and myself had created.