YOU SHALL NOT PASS ! - NOW, that's a mean stare and 100% intimidation

[csziggy]

13. Are you sure? Downys are very small birds

Only about 6 1/2" long. Most fence posts are about 3-4" in diameter so UI'd estimate that bird is about the size of a hairy woodpecker, which is about 9 1/4" long.

But I am confused - the bird in the gif shows red markings on the lower part of the belly. So far as I know neither Downy or Hairy woodpeckers have that marking.

Now, the owl is another thing - I think it might be a burrowing owl, partly because it is far too small to be a barred owl (which was my first thought): https://www.allaboutbirds.org/guide/Burrowing_Owl/overview

Of course since we don't know where the video that this gif was made from was filmed, this could be a woodpecker of the non-American sort in which case the ID on both birds could be wrong!

Soooo, I pulled out my RSPB Guide to British Birds and found the Great Spotted Woodpecker. It is about nine inches long (slightly smaller than the Hairy) and has deep red "under tail coverts" as does the woodpecker in the gif. https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/great-spotted-woodpecker/

That would make the owl a Little Owl (https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/little-owl/) which are about the same size as the Great Spotted Woodpeckers and which are extremely similar to burrowing owls!