Animal - Sidewinder Rattlesnake - 3D lenticular postcard

Postcard
• Picture / Image:  Sidewinder Rattlesnake - German lenticular 3D postcard
• Publisher:  mbmSystems GmbH
• Postally used:  no
• Stamp:  n/a
• Postmark(s): n/a
• Sent to:  n/a
• Notes / condition: 

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Text from the free encyclopedia WIKIPEDIA may appear below to give a little background information (internal links may not  work) :

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Crotalus cerastes is a venomous pit viper species belonging to the genus Crotalus (rattlesnakes) and found in the desert regions of the southwestern United States and northwestern Mexico. Three subspecies are currently recognized, including the nominate subspecies described here.^[3]

A small species, adult specimens measure between 43 cm and 76 cm (17 and 30 in) in length.^[2] Most adults are 50–80 cm (19.8 to 32 in) in length.^[4] The females are larger than the males, which is unusual for this group of snakes.^[5]

Usually, 21 rows of keeled dorsal scales occur midbody.^[2][6] Males have 141 or fewer ventral scales; females have 144 or fewer.^[2] It is sometimes referred to as the horned rattlesnake because of the raised supraocular scales above its eyes. This adaptation may help shade the eyes or prevent sand drifting over them as the snake lies almost buried in it.^[5]

The color pattern consists of a ground color that may be cream, buff, yellowish-brown, pink, or ash gray, overlaid with 28-47 dorsal blotches subrhombic or subelliptical in shape.^[4] In the nominate subspecies, the belly is white and the proximal lobe of the rattle is brown in adults. Klauber and Neill describe the ability of this species to display different coloration depending on the temperature—a process known as metachrosis.^[2]

In the southwestern United States, this species is found in the desert region of eastern California, southern Nevada, southwestern Utah, and western Arizona. In northwestern Mexico, it is found in western Sonora and eastern Baja California.

The common name sidewinder alludes to its unusual form of locomotion, which is thought to give it traction on windblown desert sand, but this peculiar locomotor specialization is used on any substrate over which the sidewinder can move rapidly. As its body progresses over loose sand, it forms a letter J-shaped impression, with the tip of the hook pointing in the direction of travel. Sidewinding is also the primary mode of locomotion in other desert sand dwellers, such as the horned adder (Bitis caudalis) and Peringuey's adder (Bitis peringueyi), but many other snakes can assume this form of locomotion when on slick substrates (e.g., mud flats).

The species is nocturnal during hot months and diurnal during the cooler months of its activity period, which is roughly from March to November (probably longer in the southern part of its range).

Juveniles use their tails to attract lizard prey (see video: [1]), a behavior termed ""caudal luring"". Adults lose this behavior as they make the transition from lizard prey to their primary diet of desert rodents. Sidewinder juveniles appear to mimic both life stages of lepidopterans in their luring motions. Their fast luring motions resemble the fluttering of a moth, and their slower tail movements resemble a caterpillar. Both movements have been observed to attract prey lizards.^[10]

Neonatal sidewinders engage in a remarkable behavioral homeothermy that has not been observed in any other type of snake.^[11] Following birth, the neonates mass together in their natal burrow. Most often, gravid females select an east-facing, small-diameter rodent burrow for giving birth. For the first week or so of their lives, neonatal sidewinders literally plug the entrance to this burrow during daylight hours, forming a dynamic multiple-individual mass that takes advantage of the hot exterior environment and the cool interior of the burrow to maintain an average aggregate temperature of 32°C (the optimal temperature for shedding). The dynamic mass of neonates modifies the thermal environment at the burrow entrance such that the young can occupy a location that would ordinarily become lethally hot for an individual neonate (or even an adult).^[11] Because of the constant movements of the neonates, the aggregate assumes stable temperature properties reminiscent of a homeothermic organism (i.e., maintains tight temperature tolerance ± 2°C).

Lenticular printing is a technology in which lenticular lenses (a technology that is also used for 3D displays) are used to produce printed images with an illusion of depth, or the ability to change or move as the image is viewed from different angles.

Examples of lenticular printing include flip and animation effects such as winking eyes, and modern advertising graphics that change their message depending on the viewing angle. This technology was created in the 1940s but has evolved in recent years to show more motion and increased depth. Originally used mostly in novelty items and commonly called ""flicker pictures"" or ""wiggle pictures,"" lenticular prints are now being used as a marketing tool to show products in motion. Recent advances in large-format presses have allowed for oversized lenses to be used in lithographic lenticular printing.^[1]

type=3d

animal subject=rattlesnake

period=post-war (1945-present)

postage condition=unposted

number of items=single

size=continental/ modern (150x100 mm)