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  • Jimmy Vilstrup posted an update 2 months, 2 weeks ago

    EdgingJuneJuvenileJulyJuvenileJulyConcrete block: grey Cat biscuits: entire, Cardboard juice carton: Perspex box: clear dry green Kiwi: whole Plastic Lego block: Wooden box: white redPineapple: slices Plastic Lego block: blueWooden box: white two malesJuvenileAugust6 Plastic bowling pin: red Plastic ball: pinkJuvenilePlastic box: green purple, butterfly nn.4022 shape Sponge ball: yellow Plastic box: purple Wooden table: red Plastic bin: blue7 Oranges: entire Kohlrabi: whole Cauliflower: halfJuvenileSeptember 2012 October 2012 Corn-on-the-cob: half Chicks: entire, deceasedRats: complete, deceased Khakis: wholePlastic bowling pin: Wooden table: green red Plastic ball: gold Plastic bin: blue2 femalesJuvenileSub-adultNovember 2012 JuneBehav Ecol Sociobiol (2015) 69:1209?Sub-adultSeptemberPlastic box: blue, Plastic laundry rectangle, transparent basket: black Plastic box: green, Plastic shoe rack: square, opaque whitePeppers: wholePlastic box: yellow, Plastic shoe rack: square, opaque MedChemExpress E7449 whiteBehav Ecol Sociobiol (2015) fpsyg.2015.00360 69:1209?and November 2012) and 1 round at the sub-adult stage (18 months old, September 2013). The novel foods comprised a number of distinctive categories: fruit, vegetables, meat and biscuits, which differed among test rounds, even though were stable in food category within test rounds (Table 1). For example, in test round 1, two types of chilled insects have been presented towards the birds: mealworms (Tenebrio molitor) within the individual context and crickets (Acheta domestica) within the social context. The novel objects comprised similarly sized, modest plastic or wooden items, including cups, straws, blocks, balls or boxes, which also differed involving test rounds, and were the exact same types though differed in colour inside test rounds. One example is, in test round 1, the exact same type of plastic cup was utilized: a green cup in the person context and a red cup within the social context. For each the food and object tests, the same variety of products as subjects present was applied (i.e. two things for two birds present), with products getting presented within the centre of a wooden board (board in place outside tests) on the ground. In comparison to the food and objects, which had been all transferrable products, the structures have been considerably larger, nonmovable items, consisting of plastic, wooden or concrete blocks, boxes, tables and chairs (Table 1). Within every single round, the identical structure was utilised for each the person and social context, placed around the ground, even though the position of the structure within the test compartment varied amongst contexts. As an example, in test round 1, in the person context, the structure (brown plastic bird bath) was placed on the right side with the compartment, whilst inside the social context, it was placed on the left side, and vice versa within the following test round. Only one particular structure was present per test, no matter the amount of subjects present. Moreover, subjects have been presented using a novel along with a familiar particular person, in the individual context only, 3 times from fledging till the juvenile stage–once at fledging (1 month old, May well 2012) and twice at the juvenile stage (three?7 months old, July and October 2012). The person circumstances had been not tested at the sub-adult stage, as the birds have been beginning to show aggression towards the test person at the final (juvenile stage) test and we did not would like to encourage this behaviour.