Are Crows the Ultimate Problem Solvers? | Inside the Animal Mind | BBC Earth

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We all know that crows are smarter than the average bird, but will 007 be able to solve the complex puzzle and retrieve his reward?
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Source

ErrorException Thrown from /home/natok/public_html/sitemap/addmap.php at line 29.

Trace

  #0 [internal function]: Oishy\Core\ExceptionHandler::native(2, 'file_put_conten...', '/home/natok/pub...', 29, Array)
#1 /home/natok/public_html/sitemap/addmap.php(29): file_put_contents('/home/natok/pub...', '\nhttp...', 8)
#2 /home/natok/public_html/themes/mi-red/single.phtml(74): include('/home/natok/pub...')
#3 /home/natok/public_html/app/drivers/Flash.php(155): include('/home/natok/pub...')
#4 /home/natok/public_html/app/routes/videos.php(158): Oishy\Driver\Flash->render(Array)
#5 [internal function]: {closure}('cbSu2PXOTOc', 'are-crows-the-u...')
#6 /home/natok/public_html/system/boot.php(157): call_user_func_array(Object(Closure), Array)
#7 /home/natok/public_html/index.php(21): require('/home/natok/pub...')
#8 {main}

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call_user_func() expects parameter 1 to be a valid callback, no array or string given

ErrorException / ExceptionHandler.php:71

Source

ErrorException Thrown from /home/natok/public_html/system/core/ExceptionHandler.php at line 71.

Trace

  #0 [internal function]: Oishy\Core\ExceptionHandler::shutdown()
#1 {main}

call_user_func() expects parameter 1 to be a valid callback, no array or string given

ErrorException / ExceptionHandler.php:71

Source

ErrorException Thrown from /home/natok/public_html/system/core/ExceptionHandler.php at line 71.

Trace

  #0 [internal function]: Oishy\Core\ExceptionHandler::native(2, 'call_user_func(...', '/home/natok/pub...', 71, Array)
#1 /home/natok/public_html/system/core/ExceptionHandler.php(71): call_user_func(NULL, Object(ErrorException))
#2 /home/natok/public_html/system/core/ExceptionHandler.php(85): Oishy\Core\ExceptionHandler::register(Object(ErrorException))
#3 [internal function]: Oishy\Core\ExceptionHandler::shutdown()
#4 {main}

Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /home/natok/public_html/system/core/ExceptionHandler.php on line 71