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August 28, 2005 [LINK]
I finally got some good closeup shots of one of the hummingbirds that have been entertaining us on our back patio in recent weeks. [This photo shows a female Ruby-throated hummingbird (the only hummer species in the eastern U.S.), which can be identified by the white throat. Immature male Ruby-throats have streaks and/or small red patches on their throats.] Unfortunately, the colorful adult male(s) isn't/aren't showing up as much as the female(s) for the past couple days.
NOTE: I retouched this photo to yield sharper definition; to see the original version, just click on it.
Bird diversity map
The Imperial College of London (link via Connie) has published a global map showing where various bird species live, highlighting their biodiversity. It is a more complicated picture than most people had thought.
"In the past people thought that all types of biodiversity showed the same sort of pattern, but that was based on small-scale analyses," says senior author Professor Ian Owens of Imperial College London. "Our new global analyses show that different sorts of diversity occur in very different places.
The team mapped three different measures of diversity for the study: species richness, threatened species richness (as assessed by their extinction risk), and endemic species richness (birds with a small breeding range). Only the Andes in South America contains bird hotspots under all three measures.
Posted (or last updated or commented upon): 29 Aug 2005, 12: 29 AM
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Blog highlights have been compiled for the years 2010-2012 thus far, and eventually will be compiled for earlier years, back to 2002.
The "home made" blog organization system that I created was instituted on November 1, 2004, followed by several functional enhancements in subsequent years. I make no more than one blog post per day on any one category, so some posts may cover multiple news items or issues. Blog posts appear in the following (reverse alphabetical) order, which may differ from the chronological order in which the posts were originally made:
- Wild birds (LAST)
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Also see: My blog practices.
Blog errata (Nobody's perfect.)