Relationship between the visiting birds and nectar secretion in the cherry tree.
The flying birds to cherry tree, Prunus campanulata, are well known. However since their relationship has not yet been examined, then the present study elucidated their relationship at Tama Forestry and Forest Product Research Institute. The observation of flying birds was carried out on their species, number, attitude and visiting time, with naked eye, a video camera, and a camera from the blind. The observations were carried out every 15 minutes during 5 to 12 hours per day. The efflorescence grade was divided into 4 stages. Bulbul visited most frequently to the tree among visiting birds, on the other hand white-eye visited hardly due to the disturbance by bulbul. The nectar grade gradually increased together with the efflorescence grade, then reached 30% at the 4th stage.
Hisa
Emi
E
Fac. of Sci., Japan Women's Univ.
Hanaoka
Wakana
W
Nakamura
Teruko
T
Yokoyama
Toshitaka
T
Takano
Hajime
H
D000818:Animals; D001522:Behavior, Animal; D001717:Birds; D005247:Feeding Behavior; D035264:Flowers / Q000254:growth & development*; D007564:Japan; D010507:Periodicity; D011058:Pollen; D027861:Prunus / Q000502:physiology*