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The young birds are at risk of disease and may have a lower survival rate depending on environmental conditions (Grindstaff 2003). [25] Carotenoids in egg yolk are responsible for the red or yellow color. They protect the underlying fetus's tissues from the free radicals in the environment.
The American robin (Turdus migratorius) is a migratory bird of the true thrush genus and Turdidae, the wider thrush family. It is named after the European robin [ 3 ] because of its reddish-orange breast, though the two species are not closely related, with the European robin belonging to the Old World flycatcher family.
The span between precocial and altricial species is particularly broad in the biology of birds. Precocial birds hatch with their eyes open and are covered with downy feathers that are soon replaced by adult-type feathers. [17] Birds of this kind can also swim and run much sooner after hatching than altricial young, such as songbirds. [17]
Birds also prefer structures that blend into the environment, so if the nest box is painted, earth tones (grey, green, brown) are your best bet. In short, if attracting birds is your primary goal ...
A member of the Australian robin family Petroicidae, it is known by many other names such as Dozey, Sad, Sleepy, Stump, Tasmania/Wood Robin; Native Sparrow or Sad Bird. [2] This sombre dark brown robin is characterised by a narrow line, starting from behind the eye to the rear of the ear-coverts and white bars running down it wings.
The European robin (Erithacus rubecula), known simply as the robin or robin redbreast in the British Isles, is a small insectivorous passerine bird that belongs to the chat subfamily of the Old World flycatcher family. [3] It is found across Europe, east to Western Siberia and south to North Africa; it is sedentary in most of its range except ...
Fabulous Histories tells the story of two families—one of robins and one of humans—who learn to live together congenially. The children and baby robins learn to adopt virtue and to shun vice. For Trimmer, practising kindness to animals as a child would hopefully lead one to "universal benevolence" as an adult.
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