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S'N'A Intermediate Series: Episode 27 - Baron's Racer (Philodryas baroni)

Snakes ‘N’ Adders Intermediate Series Episode 27 – Baron’s Racer (Philodryas baroni) Stunning semi-arboreal species that many people covet. This is a hardy species from an interesting region of the world. This species hail from the Chaco region spanning Bolivia, Paraguay and Argentina. The Chaco Boreal to the North, Gran Chaco in the centre and Austral Chaco to the South are an example of an alluvial plain. This is where montane river networks drop the sediment they are carrying down from the mountains. These soils build up over time and create fertile land for grasses, moist forests (for part of the year) and savannah woodlands. Across the range of the species the climate is highly changeable and as our climate data shows (which we will go through later) liable to big fluctuations. This huge variability and unreliability of the weather has made the Baron’s Racer incredibly adaptable. This adaptability translates to hardiness in captivity. Many insist on keeping the species in a tropical manner but the data once again does not support this with a large period of the year being near drought conditions. Fungal and skin conditions can occur if kept persistently too wet. Provision of a moist hide is recommended but for the most part the vivarium can be kept relatively dry. Occasion spraying at most is all that in necessary with a slight increase in regularity during shed cycles. Quoted on certain sites as being exclusively arboreal which is simply not true. Semi-arboreal is more the mark. Partaking in climbing and draping in a loose and relaxed manner. An adult snake is bigger than people would think with older mature females topping out at 6ft in length. Most animals tend to be more the 4.5-5.5ft in length mark. Care must be taken not to create obese animals in a quest for a 6ft Baron’s. Diet is unproblematic and they are ready feeders capable of sizeable prey. Francis Cosquieri noted that even hatchlings could tackle pinks easily despite their diminutive size and would progress quickly onto fuzzy mice and grow at a rate of knots. Adult vivariums should be spacious and this is a larger species than people realise. An adult vivarium minimum should be 60x24x24 with a view to being even larger if possible. Heating can be provided by Ceramic heat emitter, spot bulb, Deep heat projector or a combination of sources. These should as always be coupled to a reliable thermostat. Basking temperatures can reach 30°C without issue and localised temperatures can be even warmer. The possibility of retreat from these sites is imperative however. Night time drops can be significant and anything from 20-24° is fine. Substrate should be a mix of orchid bark, coir, soil and drier moss mixes to try and recreate a savannah grassland that wont rot when it is time for spraying. This is a species that would be forced into brumation by their climate and a less extreme version of this should be re-created in captivity to ensure good sperm count in males and good fertility in females. Clutch size varies depending upon the female but anything from 12-25 can be expected. The largest of females exceeding this. Incubation should be undertaken at a temperature of 26-28°C with a mix of 4:1 (Vermiculite to water) Colouration is variable with anything from green to olive to brown to blue is seen. The most common being green and olive animals. Particular interest exists in good examples of the brown and blue examples. This is a rear fanged species that also employs constriction to subdue prey. People differ in sensitivity to bites with some people reporting a burning sensation and others reporting edema (water retention and swelling at the bite site) – This forces the snake into the intermediate series whilst the majority of their husbandry would see them comfortably sit in the introducing series. Discuss the climate data from the 5 regions and pay attention to brumation period and the drought like winter.