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It often will imitate the calls from birds of prey such as the red-tailed hawk, red-shouldered hawk, and osprey as a warning of danger to others or territorial behavior, causing other birds to seek cover and flee feeding areas. [11] [13] Steller's jays have the ability to assess risk using different predator detection cues.
This field guide and identification app guides helps users to put a name to the birds they see, and covers 3,000 species of across the Americas, Western Europe, and India. In addition to browsing customized lists of birds for any location in the world, users can answer simple questions to get a list of most likely species, along with images and ...
It includes more than 33 million photographs, 1.2 million audio recordings, and over two hundred thousand videos [1] covering 96 percent of the world's bird species. [2] There are an ever-increasing numbers of insect, fish, frog, and mammal recordings. The Library is part of Cornell Lab of Ornithology of Cornell University.
Birds of the World is a subscription-access database that aims to describe comprehensive life history information on birds.This includes: [1] Species accounts . Details on taxonomy, habitat, breeding, diet, and behaviors
American tree sparrow species account - Cornell Lab of Ornithology; American tree sparrow - Spizella arborea - USGS Patuxent Bird Identification InfoCenter "American tree sparrow media". Internet Bird Collection. American tree sparrow photo gallery at VIREO (Drexel University) Interactive range map of Spizella arborea at IUCN Red List
eBird is an online database of bird observations providing scientists, researchers and amateur naturalists with real-time data about bird distribution and abundance.Originally restricted to sightings from the Western Hemisphere, the project expanded to include New Zealand in 2008, [1] and again expanded to cover the whole world in June 2010.
The eastern phoebe (Sayornis phoebe) is a small passerine bird. The genus name Sayornis is constructed from the specific part of Charles Lucien Bonaparte's name for Say's phoebe, Muscicapa saya, and Ancient Greek ornis, "bird". [2] Phoebe is an alternative name for the Roman moon-goddess Diana, but it may also have been chosen to imitate the ...
These birds mainly eat terrestrial arthropods and snails, and also include fruit [23] in their diet during winter. [2] The nest, referred to as the "oven" (which gives the bird its name), is a domed structure placed on the ground, woven from vegetation, and containing a side entrance. The female usually lays 4–5 eggs speckled with brown or gray.