Does mareep have a nest ?

No nests, none in the wild. Hatched 1 with 71% IVs :(

Never seen a single Mareep in the wild. Hatched a 93.3% one only with 24 candies.

No mareeps, but caught 1 flaaffy in the wild

I've caught about 6-7. All were in an electric biome which makes sense.

I've caught three all in a grass biome with zero electric spawns ever which doesn't make sense. I've also pulled four others from eggs.

Not seen one, not hatched one.
Hopefully I'll get a chance to catch one.

As rare as Larvitar, been lucky to get one and also one Flaafy, I have only found one Larvitar too.

I am getting tired of those Murkrows, they are even worse than Pidgey, you can't do nothing with them and they have a pretty high cp so they are not easy to catch.

Never saw one, never hatched one even though ive hatched a load of 10ks lately.

Electric types are common in Salt Lake City, and these are the rarest of them, but I've found a few around residential areas here.
probably happenstance but they seem to appear near Mormon churches

Electric biome. Found 1-2.

I found a nest in my city.
Not a cluster nest, but a frequent spawn point.
Mareep and Flaafy (maybe Ampharos too, but I haven't seen one yet) spawns at the same point there every 30min to 1hour.

you will literally need to use a scanner for this pokemon

I've found only one next to my house, rock biome.

The Biome I work in is mixed. Water and Electric.

For some odd reason my radar will show me voltorb and magnamites before it will show a Mareep even though they are right next to each other.

I have only 1, and its one that was hatched. Crap IVs too. I don't even know why this stupid sheep has such a rare spawn rate!

I'm in the center of a desert biome, and I see one every other day. I was really hoping I was going to see larvitar that often given that sandshrew, ryhorn, and geodude are everywhere, but not one, instead we get mareep.

I've hatched three and caught one off of incense.

Caught 2 Hatched 3