blue petrel造句

• For example, " Themisto gaudichaudii " reaches high densities ( up to 61 individuals / m 3 ) in Kerguelen waters and is a major food item for blue petrels, thin-billed prions, Antarctic prions, common diving petrels, and southern rockhopper penguins.
• Compared to other shearwaters, the species is unusually easy to identify at sea by its combination of considerable size and the distinctive M-shaped banding pattern on its upperside while flying, uniquely among its genus and more akin to some gadfly petrels ( " Pterodroma " ), the prions ( " Pachyptila " ) and their relative, the blue petrel ( " Halobaena caerulea " ).