:Here is one that I came across in travels from Bird->Bird nest->Protocalliphora. T.L. Whitworth, R.D. Dawson, H. Magalon, E. Baudry 2007. DNA barcoding cannot reliably identify species of the blowfly genus Protocalliphora (Diptera: Calliphoridae). Proceedings of the Royal Society B: Biological Sciences 274(1619):1731-1739