Nor Amira Abdul Rahman, Zalila Ali, Wan Fatma Zuharah, & Nik Fadzly. (2016). Counting with Colours? Effect of Colours on the Numerical Abilities of House Crows (Corvus splendens) and Common Myna (Acridotheres tristis). Tropical Life Sciences Research, 27(2), 1–12. https://doi.org/10.21315/tlsr2016.27.2.1