The East Siberian Greenish Warbler (Phylloscopus trochiloides plumbeitarsus) is typically characterized by its more olive-green coloration, while the West Siberian Greenish Warbler (Phylloscopus trochiloides viridanus) tends to have a brighter yellowish hue. Additionally, their song differs; the East Siberian variety has a more varied and complex song, whereas the West Siberian has a simpler, more monotonous vocalization. These distinctions in plumage and vocalization help ornithologists differentiate between the two subspecies.
Greenish Warbler was created in 1837.
The greenish warbler migrates from the Tibetan Plateau to India every year. During their migration, two species of greenish warblers met up, but didn't interbreed, therefore these birds are still two separate species. Because these birds are so closely related, it is rare that interbreeding didn't occur.
The cuckoo is a parasitic bird (with only a few exceptions), meaning it relies on other birds to nurture its chicks. So the relationship between a cuckoo and a warbler is that the cuckoo lays one of its eggs in the warbler's nest and the warbler ends up raising a cuckoo chick.
The relationship between a warbler and a cuckoo is often a parasitic one. Cuckoos lay their eggs in warbler nests, relying on the warblers to raise their young as their own. This behavior is known as brood parasitism.
It is called the Connecticut Warbler because the first specimen was collected in Connecticut and it's a type of warbler.
Canary, goldfinch, yellow warbler, prothonotary warbler, Wilson's warbler, Bachman's warbler, prairie warbler, pine warbler, western tanager, common yellowthroat, yellow breasted chat. Many warbler specie's plumage contain yellow to some degree.
If it's in the Northern Hemisphere and sort of greenish, the size of a Robin, it's probably a either a Bohemian or Cedar Waxwing. See links below.
A Blackburnian warbler is a small New World warbler, Latin name Setophaga fusca.
An aquatic warbler is a small bird of the warbler family, Latin name Acrocephalus paludicola.
Oriente Warbler was created in 1858.
Speckled Warbler was created in 1801.
Bachman's Warbler was created in 1833.