|Mourning dove in nest|
Writing for BirdScope (Vol. 25, 2), Laura Erickson listed the "top ten technologies for studying birds" as:
1. Field guides and binoculars
2. Numbered leg bands
4. Microphones and recorders
5. Radio and satellite transmitters
8. DNA analysis
10. Autonomous recording units or ARUs
|Red-tailed hawk (male, Bobby) on cross atop Judson Memorial Church|
(See the Washington Square Park Blog via Urban Hawks blog for a map of Bobby's "haunts")
To Laura's list I would add natural history books such as Crow Planet (which was reviewed by Metropolitan Field Guide), Pigeons, and Red-Tails in Love.
Which of these methods do you use regularly and which ones would you like to try? You can follow more of Laura Erickson's writing at Laura's Birding Blog.