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  2. Ornithology - Wikipedia

    en.wikipedia.org/wiki/Ornithology

    The use of field glasses or telescopes for bird observation began in the 1820s and 1830s, with pioneers such as J. Dovaston (who also pioneered in the use of bird feeders), but instruction manuals did not begin to insist on the use of optical aids such as "a first-class telescope" or "field glass" until the 1880s.

  3. Animal coloration - Wikipedia

    en.wikipedia.org/wiki/Animal_coloration

    Müller's explanation of the mechanism for this was one of the first uses of mathematics in biology. He argued that a predator, such as a young bird, must attack at least one insect, say a wasp, to learn that the black and yellow colours mean a stinging insect. If bees were differently coloured, the young bird would have to attack one of them also.

  4. The evolutionary origin of birds was an open question in paleontology for over a century, but the modern scientific consensus is that birds evolved from small feathered theropods in the Jurassic. Not all dinosaur lineages were cut short at the end of the Cretaceous during the Cretaceous–Paleogene extinction event , and over 11,000 species of ...

  5. The Mathematical Coloring Book - Wikipedia

    en.wikipedia.org/wiki/The_Mathematical_Coloring_Book

    The book "presents mathematics as a human endeavor" and "explores the birth of ideas and moral dilemmas of the times between and during the two World Wars". [1] As such, as well as covering the mathematics of its topics, it includes biographical material and correspondence with many of the people involved in creating it, including in-depth coverage of Issai Schur, Pierre Joseph Henry Baudet ...

  6. Alex (parrot) - Wikipedia

    en.wikipedia.org/wiki/Alex_(parrot)

    When a student (human or parrot) answers a question about an object correctly, they receive that object as a reward instead of a food reward, which is often used in other training techniques. Irene Pepperberg said the reward system is crucial, because it is the only way that students can make the direct connection between the object and the ...

  7. What Festive Food Scraps Can You Give to Birds This ... - AOL

    www.aol.com/festive-food-scraps-birds-christmas...

    Providing birds with a safe and warm space is just as vital as extra food at this time of year. "Robins often use nest boxes as roosting sites during the winter, so putting up a suitable nest box ...

  8. Number sense in animals - Wikipedia

    en.wikipedia.org/wiki/Number_sense_in_animals

    Birds were one of the first animal species tested on their number sense. A raven named Jacob was able to distinguish the number 5 across different tasks in the experiments by Otto Koehler. [ 5 ] Later experiments supported the claim of existence of a number sense in birds, with Alex , a grey parrot, able to label and comprehend labels for sets ...

  9. How to Make Natural Food Coloring Using Everyday Ingredients

    www.aol.com/natural-food-coloring-using-everyday...

    Ingredients to Use for Natural Food Coloring. Penguin Random House. The world is your proverbial oyster when it comes to the foods that you choose to achieve every color of the rainbow. Schreiber ...