I think another thing people get frustrated with which you illuded to Thomas was the lack of quality images when all is said and done. I think this is the "nature of the beast", pardon the pun, you encounter on any wildlife photography outing no matter where it takes place. The variables are just too great and fluctuate to frequently to even imagine a high rate of success.
I find myself, at times, taking litterally hundreds of pictures of a subject when the conditions fall close to perfect just for the hopes of that "one shot". This happened this past summer as a pair of hawks was circling over me for about 10 minutes... conditions were perfect and I ended up taking 200+ pics. In the end I think I kept 17 and of those 2 stood out.
I dont remember the exact numbers but National Geographic had a special on last winter called "Wildlife Photographers". It was about a world renouned husband and wife team of wildlife photographers who spend 6 months out of the year on a wildlife park in Africa. Thier typical outing lasted 6 weeks and in that time they would take on average 30,000+ pictures. Of those they would bring a few thousand home. Of those less than a hundred would be marketable... and of those only 4 or 5 would be "WOW" images. Sometimes they would return with absolutely no images coming in with that "WOW" factor.
Wildlife photography, in my opinion, is probably the most challenging type of photography one can undertake simple due to all the variables which one encounters. For me success has less to do with the photography end and more to do with understanding animal behavior. You can be one of the best photographers in the world but if you do not understand the bahavior of the subject you are shooting you may not even encounter it much less get images of it.
It is a hell of a lot of fun though and to this day my enthusiasm for it grows every time I get out

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Canon 7D + 50D + EF 100-400mm f/4.5-5.6L IS USM + EF 24-105mm f/4L IS USM + EF 100mm f/2.8L Macro IS USM
Pelican // Black Rapid // Think Tank // Manfrotto // Garmin
Reflections On Canadian Wildlife
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