I’m attaching some photos of our trapping site at North Tay Farm near
here, as well as a few taken in our back yard (where we have not
trapped as the birds have not returned).
We started trapping a week ago, at the farm where the family has been
feeding snowbirds in front of the house for many winters, apparently.
We started on 4 Feb with a single trap & so far have trapped on 6 days
including this morning. At the start there were a couple of hundred
birds in the flock, but this morning many fewer. We have banded 27
SNBU and have recapped 3 of these, one of them twice. We get about two
an hour and can trap for only an hour or two at a time, though Dorothy
put in about 4 hours yesterday and got 11. 23 are males – where do the
They are very flighty, and many escape; at the start we were losing
3-4 birds for each one we caught, then I realised we had made the
tunnels a bit shorter than in your plan so I lengthened them & now we
lose fewer. I am wondering though whether having the tunnels against
the end walls doesn’t make it easier for birds to get out, just by
following the walls around? Traps I am used to (from long ago, I
admit) had the tunnels mid-way along the wall..
We had been leaving the trap on site with the roof-flaps open so they
could get used to it, but I suspect we should have been taking it away
between sessions so they don’t get so used to it they come & go in &
out even when it is set? Your protocol doesn’t say anything about this
so we’d appreciate some advice on this.
Also this morning we caught a bird with “poxy” feet – I recall
catching chaffinches (at least) with this decades ago in the U.K. The
last page of the pdf attached has close-ups of both this bird’s feet,
compared with a “normal” foot. I wonder if others are seeing this? The
bird seemed fine otherwise, weight 38g, fat 4.
Feel free to use any of this in the blog, I don’t know how to add to
the blog myself..
Tony (& Dorothy)
A.W. Diamond, Ph.D.
Research Professor, Wildlife Ecology
University of New Brunswick
P.O. Box 4400
Canada E3B 5A3
Phone: (506)453-5006 (a.m.), -4926 (p.m.)
Fax: (506) 453-3583