To add to what Dabhand (Graham) said, here's my (long) story:
I was asked to photograph the wedding of a friend's daughter about 7 years ago. They didn't have the budget to hire a professional, so I agreed to do it for free. I set the camera to produce both RAW and Jpeg Basic images and covered the wedding from beginning to end, bride and groom dressing, setting up the venue, ceremony itself, group and individual portraits afterwards, reception, etc.
Because I never work with Jpeg images I didn't bother to adjust the camera to optimize the Jpeg images - no sharpening, no color saturation, contrast etc. I was going to have them make a limited selection of the images they liked, and I would then process those RAW images and print them the size they specified.
During the process I shot hundreds of images. After the wedding I gave them a thumb drive with all the images. I asked them to look at the Jpegs and advise me which ones they wanted enlarged and printed for framing. My idea was to also cull out the poor images from the RAW files and then turn the remaining images into Tiff files for further editing later. These folks were eventually going to get the best images I could produce. They could then go to a store with those final edited images and have any of them printed 4X6" or any other size they preferred. This would have been separate from the initial enlargements I would have given them.
They never made the initial selection that I asked them for, so after a while I selected two images that I liked, printed them 8X10" and framed them. This I presented to them. Imagine my surprise and horror to see later that the bride had posted all those plain, unedited Jpeg images on her Facebook page. Talk about instant gratification!
That episode, and many others after convinced me that the majority of folks who are not photographers are not nearly as discerning as I am about photos. Most of them are satisfied with images that I would not want to print and hang on my own walls. So now when I'm shooting for someone else I make sure to also produce an optimized Jpeg in camera, because that's most likely going to be good enough.
My opinion is that any images you want to post online to share from your wildlife trip, do them in Jpegs the same way as we post images in these forums. That should be good enough.