Legally Blind Birding

Testing the Patience of Birding Guides Around the World

The previous post presented a cartogram for global eBird data by county. Here, we do the same for the States (and Washington D.C.). It is worth noting what the starting conditions are; that is, what base map will be used to generate the cartogram. I am using the WGS84 geographic coordinate system/projection, shown here without any morphing: A …

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Cartograms provide a pleasing way to present geographical data. The idea is to redraw a map so that the relative sizes of its units (e.g. countries, states, counties, etc.) correspond to some measured quantity. A common example is a cartogram of population by country, in which the relative sizes of China and India become exaggerated, while …

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Retinitis Pigmentosa, or RP, is a degenerative, hereditary eye disease, and a miserable hand to draw at the table of genetic inheritance. RP reduces, or outright destroys, peripheral vision, by attacking the rod photoreceptors which are distributed to the sides of the retina, away from the back of the eye, where the cones predominate. The cones provide …

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The recent accomplishments of Noah Stryker and Arjan Dwarshuis are impressive. Anyone that has traveled internationally for birding understands how grueling even a week or two can be. Uncomfortable overnight flights, jet-lag, immigration and visa paperwork, often barely adequate rooms (some with six- or eight-legged visitors), extreme heat, humidity or cold, and the joy of traveler’s …

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