17 August 2007 - In a study by a team of Oxford University researchers led by Alex Kacelnik, seven New Caledonian crows were observed using three different tools in the correct sequence to retrieve food from a tube. The scientists had inserted the food into small tubes with only one opening. The only way the crows could remove the food was by using a special tool. However, to access this tool, the birds needed to use two other tools first. The crows easily mastered this task, some of them even on the first attempt, without any prior experience. The choice and the sequential use of the tools showed that the crows proceeded purposefully. Such complex behavior is normally an indicator of human-like intelligence.
vogelstimmen.de offers thousands of free links to recordings of birdsongs from a list of over 10000 birds. You can search the database of recordings with just two clicks. Start learning about or expanding your knowledge of birdsongs.
Do so with the CDs listed under Recordings. These enable you to identify birdsongs anywhere and without having to go online. >>
If you need something pleasing to the ear, but are only familiar with blackbirds, finches, and starlings, click on Examples, where you will find listening suggestions. You can email them to friends or use them as a basis for a new and more detailed search >>.
Perhaps one day I'll get around to adding a new category called Most Beautiful Recordings or something along those lines. Not really meant for bird lovers, but rather to offer something soothing for the soul.