[yareally]

I've been mulling about doing something like that for blue jays and peanuts to ration out their allotment in a sustainable manner. A family of blue jays (or most birds in the Crow [Corvidae] family) will rapidly hoard whatever you give them and finish off a large pile of peanuts within hours. Unlike other birds that also visit the pile of peanuts I leave out, they have no intentions of eating most of those peanuts as they take them and just stash them for later (similar to a squirrel).

The other problem is allocating peanuts to other birds (chickadees, nuthatches, cardinals, etc) while not giving too many to the blue jays. However, there's a project I ran across from CalTech that can determine the type of bird in front of a camera via computer vision[1][2][3]. Not sure why the creator of the squirrel project used a camera though when a cheaper, more robust sensor would work unless he was eventually thinking of extending its usage for more than simple motion detection.

[1] http://vision.caltech.edu/visipedia/20q.html

[2] http://vision.caltech.edu/visipedia/ipadapp.html

[3] https://github.com/welinder/cubam

[ulf]

Creator here, I used a camera so that I would have video of everything that is happening. As seen in the follow-up post [1], I rebuilt the system so that the nut-release is triggered by a proximity sensor. The camera only records now.

[1] http://blog.ulfster.com/post/114942851719/squirrel-feeder-v2...