The diet of the Luzon bleeding-heart consists of seeds, fallen fruits and invertebrates, including snails, ticks and insects, which it forages for in leaf litter on the ground (2) (4) (7). This species’ beak is not adapted to chew or de-husk food so instead the food is swallowed whole (4). The Luzon bleeding-heart is usually seen alone or in pairs, and it roosts in low trees and shrubs at night (2).
The Luzon bleeding-heart is monogamous and pairs bond for life (4) (8). Courtship begins with the male chasing after the female on the ground. When the female stops, the male begins his courtship display whereby he inflates his breast during bowing rituals, to emphasise the red spot, and emits a rapid, gruff ‘croo-cu-cu-cu-cu’ call and a soft ‘co-co-cooooo’ (2) (4).
The Luzon bleeding-heart builds a nest in a low bush or tree using twigs, roots and grasses (4). This species has a small clutch size of only two bluish-white eggs, which both the male and female incubate over a period of 17 to 18 days. Once hatched, the chicks fledge after 12 to 16 days (2).
As in other pigeons and doves, both the male and female Luzon bleeding-heart secrete high-energy nutritious ‘crop milk’ with a similar composition to the milk produced by mammals. The chicks feed solely on crop milk for the first few days of life, and from then on they are given an increasing proportion of solid food items regurgitated by the adults alongside the milk. Being fed on crop milk allows the nestlings to grow very quickly and at four weeks of age they begin to forage for themselves (4) (8).