Large Fish..............and a I think a Warbler

I wonder if someone could id a few pictures for me, we saw these on a walk on Sunday but I'm really not good with fish, unless it's well seasoned and stuffed with herbs, although not sure I would want to eat this one!

Another shot, it was what I like to call "Masseeef" skimming the surface of the water with a mouth that would put my Dyson to shame!

 and another...

 

Then from one extreme to another, we spotted this bird one of two which were flitting from the trees to open grassland and back again over and over.  Sorry the pictures are a bit grainy as it was a far off shot but can't quite make out what the birds were.  I did try to enlarge them but this only made the image worse if that can be possible.

One more just as bad

Many thanks

Kerry