Hi,
I am a keen photographer. In my portfolio is about 6000 images. It includes wildlife, birds, wild animals, landscape, sport etc. I am sure there will be images in line with your requirement. I can submit to you say batches of 10 photo. You select what you like and then we repeat the process until you are satisfied.
Please look at my Freelancer portfolio -it will give you some overview of what is available. I am not sure what quantity you are looking for but I have based my price on US $ 3.25 each + the freelancer commission. Therefore the bid was based on 11 images.
Please contact me if you need more info. Payment via Freelancer.