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The chickadee has subtle call variations that communicate information about the size and risk of potential predators. Many birds recognise the simple alarm calls produced by other species, but the red-breasted nuthatch is able to interpret the chickadees' detailed variations and to respond appropriately. [24]
Chickadees with access to bird feeders in a very cold winter are twice as likely to survive than those without access to this supplemental food; months with severe weather when the temperature drops below −18 °C (0 °F) for more than five days make the primary difference between the survival rates with and without feeders. [31]
Much of the research done on this type of communication has been in bird species, including the nuthatch and the great tit. Nuthatches are able to discriminate between subtle differences in chickadee alarm calls, which broadcast the location and size of a predator. [ 9 ]
A flying paradox, the house finch is both native and introduced to North America. Originally native to Mexico and the Western United States, house finches were shipped to New York City and sold as ...
The chickadee (specifically the black-capped chickadee Poecile atricapillus, formerly Parus atricapillus) is the official bird for the US state of Massachusetts, [5] the Canadian province of New Brunswick, [6] and the city of Calgary, Alberta. [7] The chickadee is also the state bird of Maine, but a species has never been specified. A proposed ...
The nuthatch's habit of wedging seeds into cracks and hammering them open has given rise to its common name. In the past, the red-breasted nuthatch and four other species — the Corsican nuthatch, the Chinese nuthatch, the Algerian nuthatch and the Krüper's nuthatch — were thought to be a single species. [8]
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S. c. carolinensis in Algonquin Provincial Park, Canada. The white-breasted nuthatch is a medium-sized nuthatch, measuring about 15.5 cm (6.1 in) in length. [9] Like other members of its genus, it has a large head, short tail, short wings, a powerful bill and strong feet; it is 13–14 cm (5.1–5.5 in) long, with a wingspan of 20–27 cm (7.9–10.6 in) and a weight of 18–30 g (0.63–1.06 oz).