Hawaiian honeycreepers(birds), consisting of 50 species, some of which are now e

Question

Hawaiian honeycreepers(birds), consisting of 50 species, some of which are now extinct, represent a much more diverse lineage than Hawaiian thrushes.honey creepers have a remarkable variation in Bill morphology, whereas Hawaiian thrushes exhibit far less morphological variation.Bill morphology is strongly linked to the resources available for these birds to eat. This suggests that.........in honey creepers may have occurred as a result of
select one:
a) sexual dimorphism:leks
b) allopatric speciation;hybrid zones
c) sexual selection; monogamous pair bonds
d) adaptive radiation;dietary specialization
e) adaptive radiation; poor dispersal ability

Explanation / Answer

Well, the honeycreeps have evolved due to "Adaptive radiation; dietary specialization".

Honeycreepers are the small endemic birds of Hawai. These range in colour and have a wide range of beaks from short to long, stubby to delicate and from straight to curved, these originated due to the availability of the food resources.

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