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2. Bird (mathematical artwork) - Wikipedia

   en.wikipedia.org/wiki/Bird_(mathematical_artwork)

   The 500 line segments defined above together form a shape in the Cartesian plane that resembles a bird with open wings. Looking at the line segments on the wings of the bird causes an optical illusion and may trick the viewer into thinking that the segments are curved lines. Therefore, the shape can also be considered as an optical artwork.

3. Bird intelligence - Wikipedia

   en.wikipedia.org/wiki/Bird_intelligence

   The birds then congregate in massive flocks made up of several different species for migratory purposes. Some birds make use of teamwork while hunting. Predatory birds hunting in pairs have been observed using a "bait and switch" technique, whereby one bird will distract the prey while the other swoops in for the kill.

4. 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 ...

5. Worksheet - Wikipedia

   en.wikipedia.org/wiki/Worksheet

   The form comes with two worksheets, one to calculate exemptions, and another to calculate the effects of other income (second job, spouse's job). The bottom number in each worksheet is used to fill out two if the lines in the main W4 form. The main form is filed with the employer, and the worksheets are discarded or held by the employee.

6. Birdwatching basics: a beginner's guide - AOL

   www.aol.com/birdwatching-basics-beginners-guide...

   A bird field guide is crucial in helping you identify different species. These guides typically include pictures, descriptions and range maps. And don’t forget a notebook to keep a record of the ...

7. Ornithology - Wikipedia

   en.wikipedia.org/wiki/Ornithology

   Studies in bird behaviour include the use of tamed and trained birds in captivity. Studies on bird intelligence and song learning have been largely laboratory-based. Field researchers may make use of a wide range of techniques such as the use of dummy owls to elicit mobbing behaviour, and dummy males or the use of call playback to elicit ...

8. Avian brain - Wikipedia

   en.wikipedia.org/wiki/Avian_brain

   Brains of an emu, a kiwi, a barn owl, and a pigeon, with visual processing areas labelled. The avian brain is the central organ of the nervous system in birds. Birds possess large, complex brains, which process, integrate, and coordinate information received from the environment and make decisions on how to respond with the rest of the body.

9. AOL Mail

   mail.aol.com/d?reason=invalid_cred

   You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.