According to the Cornell Lab or Ornithology, there are four general wing shapes that allow birds to do specific things, such ...

A prepared, spread wing from a bar-headed goose (Anser indicus); part of the Cowan Tetrapod Collection at the Beaty Biodiversity Museum in Vancouver, BC, Canada. Markers indicate the locations of ...

A truly shocking study published in the journal Science in September reveals a net loss of nearly 3 billion birds in North America since 1970—a 29 percent drop in under 50 years. This precipitous ...

The passive soaring wing design included buzzards, hawks, eagles and storks and they are spread out allowing these birds to effectively use thermals to gain altitude without having to use energy ...