In general , the honeyeaters with long , fine bills are more nectarivorous , the shorter-billed species less so , but even specialised nectar eaters like the spinebills take extra insects to add protein to their diet when they are breeding .
In general , the honeyeaters with long , fine bills eat more nectar , the shorter-billed species less so , but even specialised nectar eaters like the spinebills take extra insects to add protein to their diet when they are breeding .