I'm about to start training my chickens in basic voice commands: 'come on' and 'go to bed'. I use these to mean "follow me" and "go to your run". I know that chickens can respond to operant conditioning, so I wondered if anyone out there has any insights? #chickens #colourvision #colorvision #vision

Bumblebee (Bombus friseanus) visiting the human-red flower of Onosma confertum (Boraginaceae) and reflectance spectra of natural, UV+ (coated with only oil substrate) and UV− (coated with sunscreen mixture and oil substrate) flowers (a). Their colour loci were mapped in the colour hexgon model (Chittka 1992) (b) and the RNL model (Vorobyev and Osorio 1998) (c). The relevant region of the coordinates are detailed to show the relative positions of colour loci in more detail.

Reflectance curves of the background, training and testing stimuli (cultivated varieties of Camellia japonica) that have been used in colour choice by flower-naïve bumble bees.

【💡High Cited 2020-2022 】
The ultraviolet colour component enhances the attractiveness of #RedFlowers of a bee-pollinated plant

Core:
1️⃣ #UltravioletReflection
2️⃣ Color preference of Bumblebees

#BeePollination | #ColourVision | #FloralColourEvolution | #PollinationSyndrome

doi.org/10.1093/jpe/...

Flying blind - accessibility in the world wide web Do you know how many visually impaired people there are out there? I can tell you: There are roughly 188.5 million people with mild vision impairment, 1043 million have moderate to severe vision impairment, and 36 million people are blind (According to the world health organisation in 2018). When it comes to colour blindness there are approximately 300 million people affected – that’s almost as many people as the entire population of the USA! (According to the Colour Blind Awareness Community) That’s a lot, isn’t it? And a lot of those people also use the web. Not everyone in the same way as most do though. Have you ever used a screen reader? Or heard of the term at all? A screen reader is a tool used to have the content of your screen read out for you. They are usually used by people who have issues reading what’s presented – either because they cannot distinguish between what’s written and the background because of bad contrasts, because fonts that are too small or just because they can not read or see at all. For anyone who is interested how it works there is a lot of material on youtube, like […]

Flying blind – accessibility in the world wide web#accessibility #colorvision #colourvision #visiondeficiency #w3

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