My personal experience has been that 10k egg drop rate has increased, thankfully. But it hasn't done me a lot of good. Someone posted a link here that I thought said Dratini were the most common hatch now (33%?). I last hatched a Dratini on 3/2. With 21 eggs since then, I have Sudowoodo x5, Pineco x5, Mantine x4, Gligar x 3, Skarmony x2, Mareep x1, Larvitar x1. Zero Chansey, Snorlax, Lapras or Dratini.
I understand RNG, of course, and these eggs come from a variety of stops, in parks, downtown, riverside, etc. I am curious if I'm just cursed, or if this distribution is more typical. None of these eggs were banked; all collected in the last 4 weeks.
https://thesilphroad.com/science/secret-egg-rarity-tiers-pokemon-go
Silph Road did some data collecting - I will say that I think the eggs are more biome and/or region dependant than what they claim, just from anecdotal evidence and people discussing this article.
They do say that there is not enough data to determine one way or the other if region/biome has an effect.
As the guy above said, according to the available data, it's all random, so it migth just be bad luck (I hatched 4 pinecos and 1 gilgar off my last 5 10k's so you are not alone), One thing to note is the pokemon seems to be determined first, and then the egg, so the pokestop will first decide randomly that it will give you say a gilgar, and then will give you the appropriate egg to walk, so looking at just your 10k statistics might not be representative of the real situation.
