Fox mania -- critique requested

[Fotografer]

I think I have it <img src="http://thephotoforum.com/forum/images/smilies/icon_wink.gif" border="0" alt="" title="Wink" smilieid="35" class="inlineimg" /></p>
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<p>Well got another change at the British Wildlife Centre and after a long long walk to the place found it at last! Another bright and sunny day - though at some points I was wishing for a little cloud cover - sunlight is tricky at the higher points of the day. Anyway here is some of the fox shots I managed to get;</p>
<p>all taken with Canon 400D, canon 70-200mm f2.8 IS and 1.4 teleconverter</p>
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<p><img src="http://farm4.static.flickr.com/3415/3230037064_79c7e38684.jpg" border="0" alt="" /></p>
<p>f8, ISO 100, 1/50sec</p>
<p>link to larger: <a href="http://farm4.static.flickr.com/3415/3230037064_61915fd837_o.jpg" target="_blank">http://farm4.static.flickr.com/3415/3230037064_61915fd837_o.jpg</a></p>
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<p><img src="http://farm4.static.flickr.com/3131/3229185223_8898b00f6c.jpg" border="0" alt="" /></p>
<p>f4, ISO 100, 1/320sec</p>
<p>link to larger: <a href="http://farm4.static.flickr.com/3131/3229185223_569f8d29cc_o.jpg" target="_blank">http://farm4.static.flickr.com/3131/3229185223_569f8d29cc_o.jpg</a></p>
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<p><img src="http://farm4.static.flickr.com/3510/3229186265_18f445006c.jpg" border="0" alt="" /></p>
<p>f5.6, ISO 100, 1/200sec</p>
<p>Link to Larger: <a href="http://farm4.static.flickr.com/3510/3229186265_4b10de4d85_o.jpg" target="_blank">http://farm4.static.flickr.com/3510/3229186265_4b10de4d85_o.jpg</a></p>
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<p><img src="http://farm4.static.flickr.com/3510/3264175424_a4dc9164a2.jpg" border="0" alt="" /></p>
<p>f4, ISo 100, 1/640sec</p>
<p>link to larger: <a href="http://farm4.static.flickr.com/3510/3264175424_0c03dd4cce_o.jpg" target="_blank">http://farm4.static.flickr.com/3510/3264175424_0c03dd4cce_o.jpg</a></p>
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<p><img src="http://farm4.static.flickr.com/3267/3229184187_208e7a93be.jpg" border="0" alt="" /></p>
<p>f4, ISo 100, 1/640seclink to larger: <a href="http://farm4.static.flickr.com/3267/3229184187_d5435f5a54_o.jpg" target="_blank">http://farm4.static.flickr.com/3267/3229184187_d5435f5a54_o.jpg</a></p>
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<p><img src="http://farm4.static.flickr.com/3339/3230035112_42f9cb21b2.jpg" border="0" alt="" /></p>
<p>f4, ISO 100, 1/400sec</p>
<p>link to larger: <a href="http://farm4.static.flickr.com/3339/3230035112_405f92414a_o.jpg" target="_blank">http://farm4.static.flickr.com/3339/3230035112_405f92414a_o.jpg</a></p>
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<p>Any comments/crite welcome - thank you</p>
<p>&n