In this instalment we are talking tortoises - how clever are they, and how well do they get on with ravens? We follow up the tortoise double header with a miniature Species of the Bi-Week. 
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Main Paper References:
Santacà, M., Petrazzini, M. E. M., Agrillo, C., & Wilkinson, A. (2019). Can Reptiles Perceive Visual Illusions? Delboeuf Illusion in Red-Footed Tortoise (Chelonoidis carbonaria) and Bearded Dragon (Pogona vitticeps). Journal of Comparative Psychology, 133(4), 419–427. https://doi.org/10.1037/com0000176
Segura, A., Jimenez, J., & Acevedo, P. (2020). Predation of young tortoises by ravens: the effect of habitat structure on tortoise detectability and abundance. Scientific Reports, 10(1), 1–9. https://doi.org/10.1038/s41598-020-58851-5
Species of the Bi-Week:
Loc-Barragán, J. A., Reyes-Velasco, J., Woolrich-Piña, G. A., Grünwald, C. I., de Anaya, M. V., Rangel-Mendoza, J. A., & López-Luna, M. A. (2020). A new species of mud turtle of genus kinosternon (Testudines: Kinosternidae) from the pacific coastal plain of northwestern Mexico. Zootaxa, 4885(4), 509–529. https://doi.org/10.11646/zootaxa.4885.4.3
Other Mentioned Papers/Studies:
Smith, S. N., Jones, M. D., Marshall, B. M., Waengsothorn, S., Gale, G. A., & Strine, C. T. (2021). Native Burmese pythons exhibit site fidelity and preference for aquatic habitats in an agricultural mosaic. Scientific Reports, 11(1), 1-13.
Soldati, F., Burman, O. H. P., John, E. A., Pike, T. W., & Wilkinson, A. (2017). Long-term memory of relative reward values. Biology Letters, 13, 20160853. http://dx.doi.org/10.1098/rsbl.2016.0853
Music:
Intro/outro – Treehouse by Ed Nelson
Species Bi-week theme – Mike Mooney
Other Music – The Passion HiFi, www.thepassionhifi.com