Across 1,764 ranked games on patch 16.21 in Master and above, Talon mains win 54.3% of their games in the jungle.
Their most common build appears in 40.3% of those games and wins 55.3% of its 711 games.
It starts 
Gustwalker Hatchling, completes 
Umbral Glaive, 
Voltaic Cyclosword, 
Edge of Night, 
Lord Dominik's Regards and 
Serpent's Fang in that order, and takes 
Boots of Swiftness.
Three other builds are played often enough in the jungle to be measured on their own.
In the jungle, Talon mains fare best against 
Sylas (won 69.0% of 42 games), 
Ambessa (won 81.8% of 11 games) and 
Jarvan IV (won 62.7% of 51 games).
Their hardest matchups, the champions that counter Talon, are 
Nunu & Willump (won 36.8% of 19 games), 
Qiyana (won 47.8% of 69 games) and 
Lee Sin (won 47.5% of 59 games).