English: This video shows Uék's fifth Tertiary-2 trial in Experiment 2, which was her 67th trial in total. Correct sequence of actions: use the longer of two tabletop tools (freely available in centre of arena) to retrieve the 20 cm tool from the tool-frame (left-hand tool-lane); then use this 20 cm tool to retrieve the 25 cm tool (third tool-lane from left); then use the 25 cm tool to retrieve the food. Observed behaviour: Uék picks up the longest tabletop tool and uses it to retrieve the 20 cm tool. She uses the 20 cm tool to probe for the 25 cm tool, initially from the top of the tool-frame but then from the front. Once she has retrieved the 25 cm tool she takes it immediately to the food-frame and retrieves the food.