Just a quick update on my window-collisions research: I’ve heard from several more people who have tried the highlighter with pretty good success. Continuing my own experiments here I’ve had over a month of 100% success with an array of monofilament stretched between two wooden boards outside the window. The monofilament is suspended a couple […]
More Bird-friendly Window Treatments Read More »
[edited 12 and 14 Jan, 2008, adding comments about the index] I’ve been thinking about redpolls more, and had another, more careful, look at Troy’s 1985 paper, which is filled with interesting observations and some serious “food for thought”. First of all, Troy identified redpoll specimens using a character index, which is a well-established method
A Character Index for Redpoll identification Read More »
I have had two inquiries about Tropical Parula in the last 24 hours, prompted by a bird currently in Austin, Texas. You can check out that bird in photos by Andy Balinsky and photos and some background by Martin Reid. It has the throat pattern and extensively yellow underparts of Tropical Parula, but the pale
On the MOU website: a Hoary photo Here from Minnesota (where Hoary is expected and the threshold is low) of a pale Hoary-type with a relatively long bill Some other recent Hoary photos from Michigan – scroll left and right to see about 5 shots From Ontario this photo and the two following show a
A couple of Redpoll additions Read More »
More thoughts on redpolls after yesterday’s post, prompted by my own nagging doubts and a query from Nick Anich: In all of this redpoll ID discussion, I think people ask the general question “How can I identify a Hoary?” when what they mean is the more specific question “Just how pale/small-billed/unstreaked does a redpoll have
The Redpoll Questions Read More »
[Edited 2 Jan to add a hint of uncertainty to the identifications] Over the holidays I was able to spend a few days at my parents’ house in upstate New York, and enjoyed the redpolls that were visiting the bird feeder. I saw one clear-cut Hoary and at least two other Hoary-type Redpolls, and at
My Holiday (Redpoll) Photos Read More »
After my previous posts on redpolls here and here, I’ve had a chance to skim some of the redpoll literature, and it confirms that these are two very similar species (gasp! really?). Two papers in particular by Seutin et al (1992, 1993) offer some interesting observations. They conclude that it is possible to classify specimens
Slaty-backed Gull in Gloucester, MA on 23 December 2007 – Photo by Phil Brown Part 1: On 6 December 2007 at about 8PM, in the midst of an intense winter storm, a resident of Lillooet, BC heard a thump on their front door. Thinking the dog wanted to come in, they opened the door to
What are the odds? Read More »
I was in Washington DC recently and signed some calendars at my cousin’s flower shop in Mount Airy, Maryland. So if you’ve been thinking about getting a calendar and you’d like one that I’ve signed, you can order them here. And my new Birder’s World column about identifying songbirds by flocking habits is now available
Calendars and columns Read More »
Our perspective and the assumptions and decisions that are triggered by that point-of-view, strongly influence how we perceive the world around us. In short, what we see often depends on how we look at it. This classic drawing looks like a frog sitting on the edge of a pond… but rotate it ninety degrees and
Perspective on a mystery bird Read More »