What Comes After
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Item #: SCP-3752 Level 3
Object Class: Euclid Classified


SCP-3752-A containment area at Site-66, currently housing over ███ specimens.

Special Containment Procedures: SCP-3752-A containment areas have been established at Biological Research Area-12 and Bio-Site-66. These areas consist of cylindrical buildings 3 meters tall, 15 meters wide and 125 meters long, constructed from corrosion-resistant aluminium. Two-meter windows constructed from 2.5-centimeter-thick plexiglass are spaced half a meter apart.

SCP-3752-A instances are to be provided with a constant supply of clean water and 120 pounds of food per week. The chambers should be cleaned daily by assigned D-class personnel. See Memorandum 09/22/2018.

In the event of a site lockdown or other emergency situation, the containment area will be automatically sealed off from the rest of the structure. If this seal is forcibly breached, hydrogen cyanide gas will be vented into the area to prevent specimens from escaping or entering the custody of potentially dangerous Groups of Interest.

Mobile Task Force Lambda-4, Division 3752-Ω is currently responsible for locating and containing SCP-3752-A instances. Task force operatives should be contacted in the event of unusual and/or aggressive behavior from contained specimens.

Description: SCP-3752 is a genetic anomaly specifically affecting avians in the Palaeognathae clade1 and the Phasianidae family.2 Affected animals are collectively designated SCP-3752-A.

SCP-3752-A instances are undergoing significant genetic mutations and increased reproduction. This has led to the affected species evolving extremely rapidly. Since the initial discovery of SCP-3752 in 2001, six new avian genera and ten genetically distinct species have been declared by Foundation researchers (see Addendum 3752-1 below).

Common phenotypic expressions amongst SCP-3752-A instances include:


Contained specimens at Site-66, demonstrating development of scale-analogs.

  • Calcification of epidermis, resulting in development of keratin plating similar to reptilian scales.
  • Development of pyncofiber membranes in wings and across skin (similar to fibers found in Sordes pilosus fossils)
  • Larger/thicker talons and beaks
  • Increases in body mass (height and weight increasing monthly ~23% above baseline)
  • Increased joint articulation and flexibility
  • Accelerated reproductive cycle and decreased maturity period
  • Hyperphagia (presumably, increased calorie intake fuels growth rates and rapid reproduction)
  • Increased photoreception (likely directly connected to increased nocturnal activity)
  • Formation of pronated forelimbs (as of most recent hatchlings, 08/23/2017)

Addendum 3752-1: New genera/species identified in containment.

Genus Included Species
Galleris Galleris gallus, Galleris habroptila, Galleris terrestre
Struthiensis Struthiensis kakesiensis, Struthiensis diactus
Strigoare Strigoare strigops
Aptythera Aptythera vulgaris, Aptythera habroptila
Hypolornis Hypolornis geranoides
Pachyande Pachyande mannava