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The bird is also Michigan's state bird of peace. [49] The mourning dove appears as the Carolina turtle-dove on plate 286 of Audubon's Birds of America. [19] References to mourning doves appear frequently in Native American literature. Mourning Dove was the pen name of Christine Quintasket, one of the first published Native American women authors.
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Juvenile birds are more yellowish and have fewer contrasting colors. They become similar to mature ones in September, although some parts of the wings are kept until May/June next year. [15] Blue tits can also see in ultraviolet light – that's one of the ways they can distinguish whether the bird they're seeing is a male, female or juvenile. [16]
The two primary features used to identify this bird in the field are its long wings and its white rump. The white patch on the rump can be seen while the bird is in flight. Its long wings extend beyond the tail by about a quarter inch. [9] Baird's sandpiper also shows this trait but can be distinguished by the lack of a white rump.
For these northern birds there is a trade off between staying put and risking starvation, or facing the perils of migration. [5] Even in somewhat milder regions, where over-wintering is normal, exceptionally cold winters can cause such heavy losses that breeding populations take several years to recover.
The speed at which small fish (which along with krill are the auk's principal prey) can swim doubles as the temperature increases from 5 to 15 °C (41 to 59 °F), with no corresponding increase in speed for the bird. The southernmost auks, in California and Mexico, can survive there because of cold upwellings. The current paucity of auks in the ...
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.
It is a stocky grey bird with a head sometimes tinged with brown, and white feathers on the eyelids that cause the eyes to flash white as the bird blinks. It is 16.5 cm (6.5 in) long, has a wingspan of 23 cm (9.1 in), [2] and weighs on average 46 g (1.6 oz). The name "dipper" derives from its long legs, which it uses to bob its whole body up ...