Mention some adaptations of ornithophilous flowers.

Explanation

(i) The flowers are usually large in size.
(ii) The flowers are tubular, cup shaped or urn-shaped.
(iii) The flowers are brightly coloured, red,scarlet, pink, orange, blue and yellow which attracts the birds.
(iv) The flowers are scentless are scentless and produce nectar in large quantities. Pollen and nectar form the floral reqards for the birds visiting the flowers.
(v) The floral parts are tough and leathery to withstand the powerful impact of the visitors.