SCP-3591
rating: 0+x

Item #: SCP-3591

Object Class: Euclid

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Sceloglaux albifacies, bearing identical external resemblance to SCP-3591

Special Containment Procedures: All communication about SCP-3591 are to be scrambled with an encryption key of 4096 Shannons or above. Executive-class communication involving transfer, release or any other activity leading to one or multiple instances of SCP-3591 leaving their confinement must deploy single-use encryption keys of 8192 Shannons. Any acts of communication to or from the Containment Site ██ not taking these measures are to be immediately reported to the site director and not acted upon regardless of their apparent authority.

Any doors used in the immediate containment of individual instances of SCP-3591 must not contain any electrical actuators, mechanisms or controllers. Instead, purely mechanical latches and bars should be used to fasten all doors at least within 100 meters of any instance of SCP-3591. The ventilation, power and lighting of the containment facility should also deploy non-electronic means or, when no such means are available, use high-grade encryption to scramble the signals of the electronic devices. Emergency backup generators installed at Site ██ should not under any circumstances rely on radioisotopes to generate power.

Determining the whereabouts of an instance of SCP-3591, be it captive or free, should always be by direct visual confirmation. While monitoring SCP-3591 via external devices such as security cameras poses no inherent risks, the material acquired this way is invariably altered and of little use in containment or surveillance. All data is to be recorded with paper and pen or with a mechanical typewriter to avoid corruption caused by electronics malfunction. Research data and monthly reports from the facility are to be transcribed to a computer at a separate location at least 10 miles away from Site ██.

Due to the nature of its anomalous properties, complete containment of SCP-3591 is currently deemed infeasible. However, its discovery by the public is considered highly improbable due to same very properties that make it hard to contain. Regardless of the difficulty of the task, every individual instance of SCP-3591 should be captured (or killed with long-range weaponry, should capture provide impossible).

Description: SCP-3591 is a species of birds bearing close resemblance to Sceloglaux albifacies or laughing owl, regarded as extinct for over a hundred years. While the external appearance, behavior, diet and vocalisations of SCP-3591 all match the description of S. albifacies, genetic comparison to it has not been successful as all DNA samples extracted from the captive SCP-3591 specimens consist of apparently random nucleotide sequences. It is unknown whether this due to the inherent genetic feature of SCP-3591 or if the tissue samples disrupt the PCR devices used in gene sequencing.

The most notable anomalous property of SCP-3591 is their capacity to influence probabilities of events around them and to use this effect to avoid capture or detection. Through means yet undiscovered by Foundation, all instances of SCP-3591 seem to project some manner of reality-warping field around themselves. As distance from an SCP-3591 instance increases, the magnitude of the effects of this field decays at an exponential rate, with a length constant of ██.█ meters, with no apparent variation between specimens. At its maximum (in less than 22.1 meters from an instance of SCP-3591), the effects of the field may cause random events to shift their distribution parameters by up to three standard deviations, although the direction and degree of these shifts depend on the conditions and do not seem to follow any distinctive pattern.

The probability-distortion field works in two ways that are, for the lack of better words, termed active and passive effects in this document. Passive effects occur in the vicinity of an instance of SCP-3591 and can be observed by running a computer function generating random numbers. Most such functions use a random seed to determine the numbers produced by the it. When an instance of SCP-3591 is close to a computer running such code, the memory banks of the computer that contain the random seed are spontaneously altered.

Active effects occur whenever an instance of SCP-3591 is threatened by a person or an automated device. This causes the parameters of any random event to greatly ”sharpen” to a single value in a way that conserves the physical well-being of SCP-3591. For instance, a tranquilizer gun pointing at an instance of SCP-3591, when the trigger is controlled by an electronic random number generator, will fire only 0.4 % of the time it should fire according to statistical models assuming no probability distortion. Other affected controller mechanisms include physical dice, decks of cards and devices that measure radioisotope decay or photon absorptions as well as █████. This has lead site research team to conclude that the events which SCP-3591 can influence can occur both at macroscopic (”Newtonian”) or quantum-mechanical scale.

In addition to its immediate preservation, SCP-3591’s probability warping can affect inadequately encrypted electronic transmissions and alter the content of these transmissions to facilitate the release of captive SCP-3591 currently held by the foundation. In the past, this lead to a catastrophic containment breach as the Site ██ received a counterfeit message with ostensibly authentic O5 credentials that ordered all instances of SCP-3591 to be released immediately, leading to the loss of all but two specimens.

Despite seeming to have formed moderately large and stable populations at least in northern ██████ and southwestern █████, local populace have, perhaps unsurprisingly, never reported any sightings of owls that match the description of SCP-3591. While evaluating the size and exact locations of SCP-3591 populations by ordinary means is not possible, the Foundation research team at Site ██ have developed a number of indirect methods to detect which areas are likely to be populated by SCP-3591. The most common method is deploying sensitive, long-range directional microphones outside the effective range of probability-altering field emanated by the SCP-3591 and scanning that area for vocalizations specific to SCP-3591.

Another method involves measuring some manner of random, stochastic activity and seeing if the distribution parameters of these measurements differ from those that are predicted by non-anomalous statistical models, but these usually require a close proximity of one or more specimens of SCP-3591, limiting their usefuless to research of specimens currently in captivity.

While the existence of SCP-3591 imposes no known direct harm to humans, the probability-altering effects can cause anomalous and unpredictable malfunctions in electronical equipment. More alarmingly, the passive probability-altering field has been shown to greatly accelerate the decay of unstable radioisotopes, leaving the areas SCP-3591 inhabit with abnormally low atmospheric concentrations of atmospheric radon or other radioactive trace gases. Core samples obtained from known SCP-3591 habitats all have low uranium-238 and uranium-235 concentrations (roughly █% below the concentration that is still considered to be economically viable for mining and refinement), even when the geological features of the area would imply otherwise.

If the global SCP-3591 population were to increase at the current rate and spread to new geographical areas, this could lead to a █% depletion of global stockpiles of uranium and other radioisotopes by 20██, resulting in a world-wide energy crisis and consequently a great deal of social upheaval. At the moment SCP-3591 populations seem to be confined to their current locales, possibly due to the diet provided by their environment. Should the dietary preferences or other relevant properties of SCP-3591 change or if new populations were to emerge in an unprecedented geographical location, reclassification of SCP-3591 as Keter-class object should be made a priority.