In no particular order, here are some of my favorite places on the internet.

Neotropical Birds
The excellent and rapidly growing resource on neotropical birds, developed by the same team that brings us Birds of North America (i.e. Cornell's Lab of Ornithology). Not yet as exhaustive as BNA (frequently cited on this blog), it presents information about an avifauna much less well-known than that of North America. Unlike BNA, this resource is absolutely free.

Macaulay Library
Also from Cornell University's Lab of Ornithology, this fantastic resource with high quality audio and video of animals worldwide (!), including a great many birds. It now even comes with a free plugin that allows you to analyze the amazing content that the Macaulay Library is providing to you also for free!

David Sibley's irregularly updated but always enlightening blog about bird identification and related matters from America's premier bird artist.

Amazing resource with audio of just about any wild bird species from anywhere in the world.

SalvaNATURA birdathon blog
[Shameless self-promotion spoiler alert:] In 2010, I had the honor of organizing the 8th annual SalvaNATURA birdathon. I hosted this blog with entries on the birdathon itself and the bird monitoring work it sponsors.

Conservation organization based in El Salvador. I have worked for and volunteered a lot with SalvaNATURA over the years. A truly inspiring group of people.

Whitefish Point Bird Observatory Hawk blog
[Another shameless self-promotion spoiler alert:] In 2009, I hosted this blog for WPBO about the hawk migration census I was doing at Whitefish Point, MI.

Derby Hill Bird Observatory
[Yet more shameless etc:] In 2007, I designed this web site for Derby Hill Bird Observatory, one of the premier spring hawk migration spots in the Northeast.

The Owl Pages
Exhaustive resource with articles, photos, sound recordings and more about owls worldwide.

Peep ID
Helpful overview dealing with identification of small Calidris sandpipers.

What recordings of North American bird song and calls can teach us about the ecology of those birds. Highly recommended.

Enter your bird observations into a large online database, and contribute to science and conservation.

Alex Wild's blog about ants. Well-written and lavishly illustrated with superb photography.

Bird Jobs
Regularly updated overview of mostly temporary field jobs with a focus on birds in the Americas.

Wildlife Job Search
A similar but much larger collection of list-servs and web sites classified per world region and taxon with temporary or permanent field or desk jobs to do with wildlife. 

Butterflies of America
Fairly complete overview of butterfly species found in the Americas, with illustrations and range information per species.

Sunstreak Books
The online companion to Jeffrey Glassberg's wonderfully practical field guide to the butterflies of Mexico and Central America. Some species that in the first edition were illustrated with museum specimens will have photos of live butterflies taken in the wild in the next edition. These can already be found online. I was able to contribute about six or seven of my own photos to the online and upcoming printed edition.

Conan O'Brien
"You call yourselves Googlers?" Conan O'Brien visits Google for their series @GoogleTalks. It's pretty funny.

Leonard Cohen
"You can read the life you're living, but you can't change a word", he says halfway into the interview. I also like what he says 15 minutes into the interview about love.

The Last Great American
2004 BBC documentary about Johnny Cash.

Picasa Web Albums Recent Photos
Now that we've left birding pretty much behind, here's a fascinating view of the world today: a random selection of photos unsorted by subject or location, uploaded to Picasa's web server today. A wonderfully moving experience.

Art Project
Another Google project I like. A virtual tour of art museums around the world.