北极鸥

Slaty-backed Gull

灰背鸥

0415 灰翅鸥 Glaucous-winged Gull | 0416 灰背鸥 Slaty-backed Gull | 0417 北极鸥 Glaucous Gull

Glaucous Gull

北极鸥

例如讲到鸥类其实有许多种,这里可以看到的就有黑尾鸥(Black-tailed Gull)、银鸥(Herring Gull)、灰背鸥(Slaty-back Gull)、北极鸥(Glaucous Gull),海鸥(Common Gull)和燕鸥(Common Tern)等,并说明他们种类和雌雄之间的颜色和体态主要差别.

herring gull

银鸥

例如讲到鸥类其实有许多种,这里可以看到的就有黑尾鸥(Black-tailed Gull)、银鸥(Herring Gull)、灰背鸥(Slaty-back Gull)、北极鸥(Glaucous Gull),海鸥(Common Gull)和燕鸥(Common Tern)等,并说明他们种类和雌雄之间的颜色和体态主要差别.

Larus argentatus Herring Gull

銀鷗 银鸥

228 北極鷗 北极鸥 Larus hyperboreus Glaucous Gull | 229 銀鷗 银鸥 Larus argentatus Herring Gull | 230 黃腳銀鷗 黄脚银鸥 Larus cachinnans Yellow-legged Gull

Glaucous GullLarus hyperboreus

北极鸥

Glaucous-winged GullLarus glaucescens灰翅鷗 | Glaucous GullLarus hyperboreus北极鸥 | Sooty TernOnychoprion fuscatus乌燕鸥Zeldzaam/Dwaalgast

Glaucous Gull Larus hyperboreus

北极鸥

297 亚美尼亚鸥 Armenian Gull Larus armenicus | 298 北极鸥 Glaucous Gull Larus hyperboreus | 299 大黑背鸥 Great Black-backed Gull Larus marinus

Larus hyperboreus Glaucous Gull

北极鸥

灰翅鸥 Larus glaucescens Glaucous-winged Gull | 北极鸥 Larus hyperboreus Glaucous Gull | 渔鸥 Larus ichthyaetus Great Black-headed Gull

Larus hyperboreus Glaucous Gull

北極鷗 北极鸥

227 海鷗 海鸥 Larus canus Mew Gull | 228 北極鷗 北极鸥 Larus hyperboreus Glaucous Gull | 229 銀鷗 银鸥 Larus argentatus Herring Gull

Larus glaucescens Glaucous-winged Gull

灰翅鸥

灰背鸥 Larus schistisagus Slaty-backed Gull | 灰翅鸥 Larus glaucescens Glaucous-winged Gull | 北极鸥 Larus hyperboreus Glaucous Gull

Great Black-backed Gull Larus marinus

大黑背鸥

298 北极鸥 Glaucous Gull Larus hyperboreus | 299 大黑背鸥 Great Black-backed Gull Larus marinus | 300 三趾鸥 Black-legged Kittiwake Rissa tridactyla

McKenna：麦肯纳(姓氏)

officers n.政府官员, 军官, 警官, 船长vt.指挥 | mckenna 麦肯纳(姓氏) | disappointing adj.使人失望的, 令人失望的

rapid：激流

他们穿过很多美丽的峡谷,绕过无数大瀑布(cataract)、激流(rapid)和瀑布(waterfall). 带着仅有的两艘船,和几乎完全耗尽的给养,剩余的六个人终于到达了维尔京河(Virgin)的摩门教定居点. 这里,是他们一百天探险的终点.