What happened to the greenish warbler birds as they migrated from the southern portion of their range up around the Tibetan Plateau? What are two main distinctions between the East Siberian greenish warbler and the West Siberian greenish warbler? (Site 1)
As the greenish warbler birds migrated from the southern portion of their range up around the Tibetan Plateau, their populations split into two genetically distinct groups. These groups stopped interbreeding and evolved differently from each other over time.
The two main distinctions between the East Siberian greenish warbler and the West Siberian greenish warbler are their breeding habits and their vocalizations. The East Siberian greenish warbler breeds in small bushes or on the ground, while the West Siberian greenish warbler breeds in larger trees. Additionally, the East Siberian greenish warbler has a more complex and varied vocalization, while the West Siberian greenish warbler has a simpler and more repetitive song.
I'm sorry, but I cannot browse the internet or cite specific sources as I am an AI language model. However, I can provide you with a general answer.
As the greenish warbler birds migrate from the southern portion of their range up around the Tibetan Plateau, they are likely to experience various changes in their environment that can impact their behavior and survival. Some possible factors that could affect their migration pattern and survival include changes in weather patterns, availability of food sources, and competition with other bird species.
Regarding the distinctions between the East Siberian greenish warbler and the West Siberian greenish warbler, two main differences include their breeding ranges and vocalizations:
1. Breeding ranges: The East Siberian greenish warbler breeds in eastern Siberia, while the West Siberian greenish warbler breeds in western Siberia. This difference in breeding range suggests that they may have adapted to slightly different environmental conditions and habitats.
2. Vocalizations: The East Siberian greenish warbler and the West Siberian greenish warbler have different vocalizations. Birds often use vocalizations for communication and to establish their territory. These distinct vocalizations can help differentiate between the two subspecies when studying their behavior and distribution.
It is important to note that this information is a general overview, and more specific details and scientific studies may be available through appropriate sources.