“Observations on the breeding biology of the Luzon flameback Chrysocolaptes haematribon (Wagler 1827) (Piciformes: Picidae) with notes on active nest defense against dollarbird Eurystomus orientalis (Linnaeus 1766) (Coraciiformes: Coraciidae)”, Nat Hist Sci, vol. 12, no. 1, Jul. 2025, doi: 10.4081/nhs.2024.748.