i dont really know what i'm doing but i'm going to try my darnedest

Item #: SCP-XXXX

Object Class: Euclid

Special Containment Procedures: Wild instances of SCP-XXXX-1 and -2 are to be destroyed. Confirmed instances of SCP-XXXX-3 are to be captured and brought to Site ██ for study.

Civilian witnesses are to be treated with Class A Amnestics and any reported missing pets or cattle mutilations are to be blamed on local wildlife.

The eight contained instances of SCP-XXXX-3 (designated A through H) are to be kept in a hermetically sealed animal pen, with features resembling a forested area, and should be fed at least once a day with live rats, though a single goat or deer is also acceptable. Personnel wishing to conduct tests on or otherwise interact with SCP-XXXX-3 must wear Foundation issue Hazmat Suits and submit to decontamination afterwards to prevent the spread of SCP-XXXX-1. Fertilized eggs produced by SCP-XXXX-3 are to be collected for study.

Description: SCP-XXXX is the collective designation for a series of anomalous phenomena. SCP-XXXX-1 is a virus that infects domestic chickens (Gallus gallus domesticus), hereby referred to as SCP-XXXX-2. SCP-XXXX-2 are otherwise normal chickens, but fertilized eggs of SCP-XXXX-2 inevitably hatch into SCP-XXXX-3.

SCP-XXXX-1 superficially appears to be a bacteriophage virus that affects only domestic chickens. Analysis suggests that SCP-XXXX-1 attaches to and modifies embryonic cells, though the exact process is not understood. Embryos that are produced as a result of SCP-XXXX-1 infection undergo many changes during embryonic development, though externally they appear to be standard chicken eggs. SCP-XXXX-1 is highly infectious, and can survive without a host for up to ██ days. The methodical behavior of SCP-XXXX-1 and recovered materials (See addendum) seem to indicate that SCP-XXXX-1 was created artificially, though the identity of the person or persons responsible remains unknown.

SCP-XXXX-2 are chickens that have been infected by SCP-XXXX-1. SCP-XXXX-2 express increased interest in mating behaviors, and will actively seek out uninfected partners. Mating has in 98% of tests resulted in uninfected partners becoming instances of SCP-XXXX-2. Upon laying eggs, female instances of SCP-XXXX-2 become lethargic and will be unwilling to move from their roost.

SCP-XXXX-3 resemble members of the clade Dinosauria, suborder Theropoda (Theropod Dinosaurs). SCP-XXXX-3 have a coat of feathers consistent with what Foundation paleontologists have observed in other theropods, though the pattern and coloration of the plumage is consistent with the breed of it's SCP-XXXX-2 parents (black and white pattern for Plymouth Rock chickens, red/brown coloration for Rhode Island Red, etc.). Instances of SCP-XXXX-3 develop theropod like features during early embryonic stages. This includes jaws and teeth, tails, and clawed forelimbs. Though range of motion is limited in these forelimbs, instances been observed using them during hunting.

SCP-XXXX-3 is the result of an SCP-XXXX-1 infection modifying the development of normal chickens. How this is accomplished is still being studied; eggs produced by SCP-XXXX-2 instances are far different from eggs produced by SCP-XXXX-3, but both will result in an instance of SCP-XXXX-3. SCP-XXXX-3 are larger than domestic chickens, with an average weight of 6.8 kilograms and an average height of 60 centimeters at the hip. Upon hatching, instances of SCP-XXXX-3 born from SCP-XXXX-2 will attack and cannibalize their attending mother. Instances of SCP-XXXX-3 born to SCP-XXXX-3 parents do not, and the members of the pack that attend nests will not demonstrate the same lethargy as instances of SCP-XXXX-2.

SCP-XXXX-3 have fairly advanced social behavior, and will form packs around family groups. When hunting, SCP-XXXX-3 will work together to bring down larger prey (typically wild deer or cows), though uncontained instances have been known to attack domesticated animals as well. SCP-XXXX-3 make complex vocalizations, and are able to co-ordinate with other instances. SCP-XXXX-3 is omnivorous, and will consume berries or fruit if no meat is available. Packs of SCP-XXXX-3 can disrupt local ecosystems, as their hunting behaviors result in the loss of large numbers of prey animals.

In controlled testing, SCP-XXXX-3 have shown a marked increase in intelligence compared to domestic chickens. SCP-XXXX-3 have demonstrated understanding of concepts such as water displacement and basic tool use, similar to members of the Corvid family, and in preliminary tests have shown an ability to recognize self in reflections. When interacting with humans, SCP-XXXX-3 are generally docile and sometimes playful. To date there has been only one incident where an instance of SCP-XXXX-3 attacked Foundation personnel.

Members of SCP-XXXX-3 are capable of reproduction, though eggs produced by SCP-XXXX-3 bear marked differences from the eggs of domestic chickens or SCP-XXXX-2. SCP-XXXX-3 eggs are typically oblong and have thicker shells, and SCP-XXXX-3 attending nests will assist newborn instances of SCP-XXXX-3 during hatchings. During mating, SCP-XXXX-3 instances will seek out members of other packs, and then form their own family group. Multiple related family groups have been observed hunting and feeding together, though they typically nest in secluded areas away from other families.

SCP-XXXX was first discovered after a large amount of cattle mutilations and sightings of SCP-XXXX-3 in Shannon County, Missouri gained the attention of the Foundation. Foundation agents were able to obtain samples of SCP-XXXX-1 and contained the remains of four instances of SCP-XXXX-2, as well as three live instances of SCP-XXXX-3. Amnestics were given to those who sighted SCP-XXXX-3, and a cover story was disseminated that explained the mutilations as the work of a pack of wild dogs.

As of 3/20/2018, Foundation zoologists estimate a population of at least ███ uncontained SCP-XXXX-3.

+Testing Logs

Test A - 1/23/2018

Subject: SCP-XXXX-3-A
Procedure: Subject placed in cell with a puzzle consisting of three stones, a cylinder containing 470 ml of water and a dead mouse. The cylinder is secured to the ground.
Results: Subject attempted to knock over the cylinder. After failing to dislodge the cylinder, it instead tries to reach in and grab the mouse with its jaws. Subject is unsuccessful. Subject observed examining the stones, then lifting them. After ten minutes of lifting and dropping stones, subject places a stone into the cylinder, causing the water level to rise. Subject becomes visibly excited, and repeats the process. At this point, enough water is displaced that the subject is able to reach in and take the mouse. SCP-XXXX-3-A does so, and consumes it.
Analysis: Entire process took one hour and thirty six minutes.

Test B - 1/28/2018

Subject: SCP-XXXX-A
Procedure: Same as in test A.
Results: Subject completed test in two minutes and twenty six seconds.
Analysis:

Test C - 2/4/2018

Subject: SCP-XXXX-3-A
Procedure: Subject placed in a cell with a puzzle consisting of a simple cage with bars too narrow for subject to reach through, a dead mouse inside the cage, and a small stick. Cage is affixed to the floor, and cannot be forced open.
Results: Subject attempts to dislodge the cage from the ground. Cage does not move. Subject observed hopping around the cage and making distressed vocalizations. Subject then picks up the stick using its jaws, and strikes the cage several times. Subject pauses, examines the cage, then pushes the stick through the bars. After a few attempts, subject successfully uses the stick to pull the mouse out of the cage.
Analysis: Entire process took one hour and fifteen minutes. Fucking superb you funky little dinosaur

Test D - 2/10/2018

Subject: SCP-XXXX-3-A
Procedure: Subject is brought into a cell in a kennel, and allowed to observe a researcher placing a dead mouse in a small clear box. The box is opened on one end by lifting a small sliding gate with a loop attached to the top, to facilitate grabbing. The box is closed and the researcher leaves. The kennel is then opened remotely.
Results: Subject investigates the box for several minutes. Subject then hops on top of the box, and uses the loop to open the door. Subject then releases the loop and tries to get into the box, but the door closes before it can grab the mouse. Subject tries again, this time pulling the door out of the box completely, and successfully gets the mouse.
Analysis: Entire process took ten minutes. Subject demonstrated ability to learn from others.

Test E - 2/5/2018

Subject: SCP-XXXX-3-A
Procedure: Subject placed in a cell with a more complex puzzle that combines elements from previous puzzles. Two stones must be obtained from the cage used in Test C and the box from Test D. Both stones must then be dropped into the cylinder from Test A so the subject can get the reward, a dead mouse.
Results: Subject used the stick intended to be used with the cage to lift the mouse out of the cylinder, bypassing the puzzle almost entirely.
Analysis: Subject displayed complex reasoning skills. Future tests should take possible shortcuts into account.

Test D - 2/11/2018

Subject: SCP-XXXX-3-A and -C
Procedure: Test chamber split down the middle with plexiglas wall, and evenly spaced holes to allow for both sides to hear the other. SCP-XXXX-3-A placed on one side and SCP-XXXX-3-C placed on the other, with a puzzle identical to Test A. Subjects hereafter referred to as Subject A and Subject C, respectively.
Results: Both subjects attempt to reach the other, and appear to be distressed. After six minutes Subject C takes interest in the puzzle, and begins investigating it in a manner similar to Subject A. Subject A makes a low, whistling vocalization. Subject C pauses and looks at Subject A, then picks up a stone. Subject A repeats the vocalization. Subject C drops the stone into the cylinder. Subject A begins bobbing it's head and trilling. Analysis of recordings reveal modulations to each call that are above the standard range of human hearing, ranging from 50-65 Hz. Subject C completes the test, and begins performing a similar dance to Subject A.
Analysis: SCP-XXXX-3-C was able to complete the puzzle in eight minutes despite having no prior experience with similar situations. Test would indicate that SCP-XXXX-3 has the capacity for communication of complex ideas and information. Further testing is required.

Addendum XXXX.1: During initial containment, a nest of SCP-XXXX-3 was discovered on property formerly belonging to a ██████ █████████, who had died six months prior. The nest was located within a chicken coop, where Foundation Agents recovered the first three living instances of SCP-XXXX-3 and deceased SCP-XXXX-2. Agents also recovered several fragments of glass which later testing found to have traces of SCP-XXXX-1, and a handwritten note, see below.

+ Access File

[ILLEGIBLE]...er is a fool. 
they were here first. 
let them live free.