in etera forest .
You can't "catch" a honchkrow in SS, you need to catch a murkrow and then get a dusk stone to evolve it. You get a dusk stone by winning the bug catching contest.
he is in the sky
no you can not the only way to catch honchkrow is to fly around but you need to use a charged latias/latios sign
First of all, you have to clear the game. After that, Togekiss and Honchkrow appears in the sky. Honchkrow is in the area between Aqua Resort and Tilt Village. There is a chance to see Togekiss, Honchkrow, Pidgeot or Skarmory. Only one of them appears to the sky. I recommend you to use charged Latias/Latios sign so you can catch it. Hope this help!
honchkrow
the power charged sign makes you go faster so that you can catch honchkrow/togekiss with ease
Murkrow evolves into Honchkrow when using a Dusk Stone.
Neither Murkrow or Honchkrow are able to learn Brave Bird.
I got close to is by not using the boost on Latias. Once you get close to it i would probably use the boost then otherwise it will go into the clouds.
Honchkrow is #430 in the national pokedex, and it is a Dark-Flying type Pokemon.
A honchkrow
Since Honchkrow is a Dark/Flying-type, its weaknesses are Electric, Rock, Ice, and Fairy-types.