By Kamil Zurek · 3 min read
CS2 chicken breeds, photos and the HatchBook explained
Catalana, Silkie and Polish definitions, naming controls, photo booth features and the limits of what game files tell us about rarity.
Last materially reviewed: 2026-09-23
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Three breed definitions, not three confirmed drop rates
The current pet schema names Catalana, Silkie and Polish chickens, alongside a common egg and chick definition. Silkie and Polish each reference a dedicated model, while Catalana uses the chicken model. These entries establish what the client knows about; they do not establish how the server chooses your pet.
The pullet milestone describes colours developing as the chicken grows. We have not verified that an egg’s shell colour predicts the adult breed or finish. Likewise, a colour appearing in an asset viewer does not automatically mean it is obtainable. Without a verified selection method, percentages and rarity labels would give a misleading impression of certainty.
Naming begins after the egg stage
The shipped pet controls enable naming from the chick stage. They check whether a custom name has already been recorded for that growth stage and allow up to 20 characters in the input. Later stages have separate name attributes, which supports another naming opportunity as the pet grows.
Use the pet’s own naming control when it becomes available. The client implementation we inspected does not justify telling players to buy a weapon Name Tag for this feature. A disabled control on an egg is consistent with the stage check, rather than evidence that you need a paid item.
Start hereThe photo booth is more than a screenshot button
The photo interface includes CT and T agent choices, poses, headwear, filters, effects and sticker controls. It also exposes camera framing and image adjustments. The shipped labels include playful headwear such as a wizard hat and a banana, plus effects including confetti and feathers.
Availability depends on context. The code checks age requirements and achievements for locations; the game text describes unlocking map stages by finishing matches on official servers. Other text explains why a pose or effect may be unavailable to a younger pet. A menu label in the files is not a guarantee that every option is open to a newly hatched chick.
What the HatchBook keeps
The HatchBook is the pet album described by the interface. Its text follows the chick, adolescent and adult stages, with pages for early life, trips and later experiences. First-day reporting also describes placing photos into a pet book, although a complete naturally raised lifecycle could not yet have been observed at launch.
Age-related departure text points players back to their profile to revisit the time spent with a pet. That makes photos worth exploring while each stage is available. We are not promising an unlimited archive or a recovery method for every possible departure: those details need live verification.
Collect memories before chasing rarity
For now, a useful collecting goal is to document your own chicken’s growth and the photo options you unlock. There is no verified basis here for pricing a breed, paying a premium for a shell colour, or assuming that a model shown online can be bought from another player.
We will need observed growth results and clearer evidence about server-side selection before a colour catalogue can double as an availability or rarity guide. Until then, the hub lists the three breed definitions and explicitly leaves the odds open.