Relationship between the visiting birds and nectar secretion in the cherry tree

Area of Science:

• Ornithology
• Botany
• Ecology

Background:

• Bird visitation to cherry trees, specifically Prunus campanulata, is a known phenomenon.
• The ecological relationship and interactions between birds and Prunus campanulata have not been previously elucidated.
• Understanding these interactions is crucial for forest and wildlife management.

Purpose of the Study:

• To investigate and clarify the relationship between flying birds and Prunus campanulata.
• To document bird species, visitation patterns, and behaviors at cherry trees.
• To correlate bird activity with the tree's flowering and nectar production.

Main Methods:

• Field observations conducted at Tama Forestry and Forest Product Research Institute.
• Systematic recording of bird species, numbers, attitudes, and visiting times using direct observation, video, and still cameras.
• Observations were made every 15 minutes between 5 AM and 12 PM daily.
• Flowering stages of Prunus campanulata were categorized into four grades.

Main Results:

• Bulbuls were the most frequent avian visitors to Prunus campanulata.
• White-eye birds visited infrequently, likely due to disturbance from bulbuls.
• Nectar concentration in the cherry tree gradually increased with the efflorescence grade, reaching 30% at the fourth stage.

Conclusions:

• Bulbuls play a dominant role in bird activity at Prunus campanulata, potentially influencing other species' visitation.
• The flowering stage and nectar availability are key factors influencing bird visitation patterns.
• Further research can explore the implications of these interactions for cherry tree pollination and bird populations.