Swallows, Martins, Swifts Worldwide
- For both specialist and amateur, this discussion group aims to discuss and disseminate information on Apodidae and Hirundinidae.
- http://tech.groups.yahoo.com/group/Swallows-Martins-Swifts-Worldwide

Ontario Hummingbird Project
- The objective of this project is to learn about the life cycle of Ontario's hummingbirds especially the ruby-throated hummingbird.
- http://www.ontariohummingbirds.ca

Broad-billed Hummingbird (Cynanthus latirostris)
- Photos, identification tips, and a taxonomy chart for this species.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i4410id.html

Allen's Hummingbird (Selasphorus sasin)
- Photos plus facts about this bird's migration status, range, and identifying characteristics. Includes a range map.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i4340id.html

ChimneySwifts.org
- Promotes the conservation of Chimney Swifts through education, preservation of existing habitat, and creation of new nesting and roosting sites. Details about the North American Chimney Swift nest site research project and spring Chimney Swift sightings r
- http://www.chimneyswifts.org/

SwiftWatch
- Project to monitor the migration of the Chimney Swift (Chaetura pelagica).
- http://www.ccb-wm.org/opportunities/swiftwatch/swiftwatch_chimney.htm

Common Swift (Apus apus)
- Detailed information about the species for everyone from beginners and advanced researchers. Includes bibliography and APUSlife, a virtual magazine.
- http://www.commonswift.org/

Winter Hummingbirds of Southwest Louisiana
- Close-up photographs and notes by hummingbird bander Dave Patton.
- http://members.cox.net/wdpatton/

Phaethornis superciliosus (Long-Tailed Hermit)
- Species account includes facts about this bird's diet, habitat, reproduction, and behavior.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Phaethornis_superciliosus.html

Vaux's Swift (Chaetura vauxi)
- Describes this bird's physical traits, migration status, habitat, and nesting. Includes a taxonomy chart.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i4240id.html

Trochilids - Hummingbird Projects
- Winter western hummingbird reports from Mississippi, Louisiana, and the eastern US, with extensive links to additional information.
- http://www.trochilids.com/

Chimney Swift (Chaetura pelagica)
- Provides photos, a sound file, and data on this bird's behavior and physical traits.
- http://birds.cornell.edu/BOW/CHISWI/

Ruby-throated Hummingbird (Archilochus colubris)
- Photo, range maps, physical traits, habitat, and diet of this species.
- http://www.nenature.com/RubyThroatedHummingbird.htm

Rufous Hummingbird (Selasphorus rufus)
- Photos, identification tips, range maps, and taxonomy chart.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i4330id.html

Anna's Hummingbird (Calypte anna)
- Illustration of male and female, sound file, and description of this bird's seasonal movements and nesting.
- http://www.birds.cornell.edu/BOW/ANNHUM/

Hummingbird Identification
- Detailed photos and notes of most U.S. hummingbird species, with illustrated glossary and side-by-side comparisons.
- http://home.earthlink.net/~zoiseaux/

Greg Lasley's Hummingbirds
- Photos and notes of 14 hummingbird species from throughout the Americas.
- http://www.greglasley.net/hummerix.html

Hummer/Bird Study Group
- Dedicated to the study and preservation of hummingbirds and other neotropical migrants. Hummingbird species accounts, winter hummingbird banding, feeding tips, events, banding stations, and on-line store.
- http://www.hummingbirdsplus.org/

Operation RubyThroat
- A cross-disciplinary international research and education project in which students, teachers, and others collaborate to study behavior and distribution of the Ruby-throated Hummingbird (Archilochus colubris).
- http://www.rubythroat.org