Monday 23 February 2015

Black rat snake

http://www.snakecatchers.com.au/Common_Tree_Snake.php
 Black rat snake Pantherophis obsoletus

The Black rat snake belongs to the Colubridae family. 

They are long and thin. They are green, brown, black, blue, yellow and white. They are the paler colours on the underside and throat. The young are a light green with black spots, during aging the colour changed to black. 

 The scales may separate if they have consumed a big meal. The anal plate is separated. 

They are roughly two metres in length. 

They are found in the rain forests, woodlands and urban area, they are able to climb trees well. They are most active during the day. They hibernate during the winter. 
They feed on amphibians, in particular skinks, frogs, lizards, rodents and birds.  

They are not venomous but they do left of a strong smell from the cloaca and it is spread using its tail, if they feel threatened or they will be stay still and not move. 

They lay eggs in the months March, April and May. The males sit and wait for the females to go past, the males detects in the females pheromones if she is ready to mate. They get together and he wraps his tail around her body, so the vents are touching, the hemipenis is erected and put into the cloaca. 

The female lays around twenty eggs which are out of sight by foilage. They hatch seventy days later. 






Nationalzoo.si.edu, (2015). Black Rat Snake Fact Sheet - National Zoo. [online] Available at: http://nationalzoo.si.edu/Animals/ReptilesAmphibians/Facts/FactSheets/Blackratsnake.cfm [Accessed 14 Apr. 2015].

Services, S. (2015). Common Tree Snake. [online] Snakecatchers.com.au. Available at: http://www.snakecatchers.com.au/Common_Tree_Snake.php [Accessed 14 Apr. 2015].
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