Feldrittersporn; Hummel. Am Ende des gespornten Honigblatts verborgener Nektar wird von langrüsseligen Hummeln entnommen. Demonstration der Rüsselbewegung und des Saugvorgangs bei abgeschnittenem Spornende.

In this film the process of capturing nectar under especially difficult conditions is demonstrated by the long-spured flowers of Delphinium consolida. Impressive outdoor pictures of the visit by the specially adapted pollinator of this flower, the bumble-bee Bombus hortensis, clear up at the same time connections between the visitor and the pollination.