What is the role of citizen science in monitoring long-term bird population trends?

89 bird species are listed as either threatened or endangered under the US Endangered Species Act. An additional 269 species are listed as Birds of ... In this article, we discuss some common misconceptions related to birds: classification, characteristics, behavior, and interaction with humans. The ancestor of all living birds lived sometime in the Late Cretaceous, and in the 65 million years since the extinction of the rest of the dinosaurs, this ... Feb 2, 2025 ... "I would say that any modern biologist would, or should, say that birds are reptiles," Martin Stervander, an evolutionary biologist and senior curator of birds ... Jun 12, 2015 ... The discovery of these new intermediary species, which filled in the spotty fossil record, triggered a change in how paleontologists conceived ... Birds Keep Our Ecosystems Running Smoothly · Birds eat insect pests that would otherwise decimate agricultural crops, gardens, and other vegetation. · Birds ... A staggering 3 billion birds – close to one in three individuals – have been lost from Canada and the United States since just 1970. In the view of most paleontologists today, birds are living dinosaurs. In other words, the traits that we accept as defining birds -- key skeletal features as ... Generally speaking, birds hate strong smells, shiny objects, and predators, such as birds of prey and larger animals or humans. Cranes, owls and semi-domestic reindeer were displaced on average up to 5 km. Bats were displaced on average up to 1 km in 21 out of 29 cases.