I like birds, so your show peaked my interest. There are some beautiful shots in the show. Here are some of my observations and general thoughts.
I love the first blue bird in the show (@.4 sec)! Some images don't fill the opening grid of birds properly and have gaps (@.11 seconds). Some images need adjusting so the bird heads are not cut off at the end of an image's zooming (@.25 sec.) Adjustments could be made on those images to fit, else choose/use some other display to better show off the images. Some images in the back during the opening grid dispaly look like they are in 4:3 display while the grid on top is more of a 16:9 aspect. That was distracting for me.
It seems more attention was spent on displaying twirling and split up transitions to get to the actual whole bird images than when they were displayed whole and at rest. Some birds seemed to disappear before being wholly displayed. Assuming the point of the show is to see the birds, the chosen transitions and effects compete too much with the images for show time. The effects should compliment the images, not compete with them for the attention of the viewer.
If the show is refined to somewhat more simplified displays and transitions, needed display time might be gained for caption reading without having to lengthen the show.
Captions at rest are easier to read for the viewer than ones that are moving.
I recommend choosing 3-5 simpler transitions and displays for your show. Spend more time on the birds at rest (during slide time) for reading inserted captions when you get them inserted.
Adjust the captions layers' key frame start and end when the bird comes into and out of view.
It seems to me, if only 1 bird is displayed per slide, the key framing job will be much easier than in those slides with multiple birds and multiple layers, etc.
There is a bracket missing in the URL above so the show link is broken. Also hope the end product of the show will be in 1080p (or at least 720p) instead of the lesser quality 360p size.
Hope that makes sense.