What does "spore" mean here?

The writer of that article (or the person they are quoting) has used 'spore' where they should have said spoor, which Oxforddictionaries.com defines thus:

NOUN

The track or scent of an animal:

EXAMPLE SENTENCES

they searched around the hut for a spoor

the trail is marked by wolf spoor

As it was vanishing on the hill-tops, a group of enthusiasts preferred to forgo arguing and, grasping their spears, were soon busy tracking its spoor on the soft soil in the crevices among the boulders.

The spoor was fresher, and the side trails of the leopard's continued presence in the area told them they were approaching her lair.

On the windowsill, the pigeon is gone, but it has left its spoor.