28 Feb 2011

Trial 6 VARIATION Consumed*
NE HEMP 1 oz


VARIATION. In order to get a slightly better idea of how much seed might be consumed if freely available, the feeders were topped up as they became empty. Hence some of the figures for consumption exceed the 4 oz amounts used in previous trials.


nigerBlue tits and Greenfinches were seen landing on the Niger dish, then leaving without feeding. Most flew to the Peanuts, which in Trial 5 had been positioned where the Niger is in this trial. I only noticed one Greenfinch that appeared to feed briefly from the Niger – but then I had other things to do! Goldfinches continued to feed from the tube feeders and ignored all the dish feeders including that with the Niger seed. In the image at left, the Niger feeder is the one without birds on! As well as the two Goldfinches shown on the tube feeder, when the image was taken another Goldfinch was on the other tube feeder just out of shot to the right. The Greenfinch in the image is on the Sunflower feeder.

The birds could possibly have eaten more than 12 ozs of Peanuts had I been able to keep the feeder stocked all the time but I found it empty on three occasions; how long it had been empty I don’t know. Of course birds can easily make off with a greater weight of Peanuts compared to any of the other trial seeds.

To replenish the 2 tube feeders each day requires approximately 1½ lbs of seed. This does not mean birds are eating that amount, because they are not. See previous images, pages etc. But I am surprised by the continuing enthusiasm the birds show either for the mixed seed or the tube feeders. Could the high visibility of the mixed seed in the tube feeders be a stronger stimulus than the single seeds visible in the dishes? The seed in the tube feeders is visible from 360° whereas that in the dishes is only visible from above the horizontal plane of the dishes. Next trial will use mixed seed in dish feeders and single seed in the tubes. That’ll fox them!


Written on April 4th, 2011 , Bird-seed Survey Tags:

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