Allopatric speciation occurs when a population of organisms is separated geographically, often by a physical barrier like a river or mountain range. Over time, the isolated populations may evolve different traits due to genetic drift, natural selection, or mutations. Eventually, they may become distinct species that can no longer interbreed successfully.

No, doves do not cry like in the song "When Doves Cry" by Prince. The sounds that doves make are typically coos and soft calls, rather than crying. The lyrics of the song are metaphorical rather than literal in this context.

yes a mallard is a herbivore for its theeth cannot feast on meat for there teeth are too brittle Mallards are common ducks and mostly eat the seeds of grasses and sedges and the leaves, stems, and seeds of aquatic plants. However, they occasionally eat insects and crustaceans and molluscs, especially when they are young. So, in answer to your question, mallards are mostly plant eaters but I suppose their varied diet would mean they are classed as omnivores.

Yes, there are several bird song datasets available online that include recordings of multiple examples of the same and different bird species. Examples include the Xeno-canto database and the Macaulay Library at the Cornell Lab of Ornithology. These datasets can be used for various research purposes in the field of ornithology and machine learning.

Prairie chickens mainly feed on seeds, insects, grasses, and various plants found in their grassland habitat. They have a varied diet which also includes fruits, buds, and some small invertebrates.

some predators include snakes, owls and hawks.
Any bird of prey such as an owl or hawk would eat a mockingbird. Falcons also would, especially a Merlin or kestrel. And I have even seen a Loggerhead Shrike eat a mockingbird. House cats, dogs, raccoons, and snakes would also gladly eat mockingbirds.

Mockingbirds belong to the family Passeriformes, order Passeriformes.

Mockingbird eggs are usually a light blue or greenish color with occasional speckles or spots.

Mockingbirds have a diverse diet that includes insects like beetles, grasshoppers, and spiders, as well as fruits, berries, and seeds. They are also known to eat small lizards and nestlings of other bird species. Their diet can vary depending on the time of year and the availability of food sources.

The mockingbird symbolizes innocence, purity, and inspiration in literature and culture. It is often used as a symbol of empathy and understanding due to its ability to mimic the songs of other birds. In Harper Lee's novel "To Kill a Mockingbird," it represents the idea of not harming those who are harmless.

House finches are susceptible to several diseases, including Mycoplasmal conjunctivitis, a contagious eye infection that causes swelling and discharge in the eyes. This disease can lead to partial or complete blindness and is thought to be transmitted through direct contact with infected birds or contaminated surfaces. It can have a significant impact on house finch populations.

No, nightingales are native to Europe, Africa, and Asia. They do not naturally occur in Pennsylvania or any other part of North America.

While singing serves practical purposes such as claiming territory or attracting mates, some birds do also sing for pleasure. Singing can release feel-good hormones like dopamine in birds, offering a form of enjoyment or relaxation similar to how humans might sing or create music for fun.

No, the Nightingale bird does not sing all year. Their singing is most prominent during the breeding season, typically from April to June. Outside of this period, they may still vocalize but not as frequently or intensely.

As with other birds, the wing of a blue jay is covered in feathers.

Eastern North America, from south Canada to Louisiana and Mississippi.

No they rebuild every year. They will also choose sites where not much building in required such as old lamps, shrubs, even in plant pots or abandoned nests of other birds

Blue jays like the color light blue

Maltese Falcon

The redstart warbler fits that description. Check a field guide.

I heard on a programme about dreams that your brain has a buffer, a bit like a computer buffer, that can take incoming data (like a tap on the shoulder) hold it in store for a split second and allow you to create a short dream that allows the input to make sense. Like when there is a fire in your dream and the fire bell is actually your alarm going off. I remember once having a dream where my bare foot touched something really hot and I jumped awake to find that the blankets had come off my foot and I had actually touched the iron bedstead (which was in fact very cold!).

Charm

6-8 weeks