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Swans are large water birds of the family Anatidae, which also includes geese and ducks. Swans are grouped with the closely related geese in the subfamily Anserinae where they form the tribe Cygnini. Sometimes, they are considered a distinct subfamily, Cygninae.

Swans usually mate for life, though "divorce" does sometimes occur, particularly following nesting failure. The number of eggs in each clutch is between 3–8.

The word is derived from Old English swan, akin to the German Schwan and Dutch zwaan, in turn derived from Indo-European root *swen (to sound, to sing), whence Latin derives sonus (sound). (Webster's New World Dictionary) Young swans are known as cygnets, from the Latin word for swan, cygnus. An adult male is a cob, from Middle English cobbe (leader of a group); an adult female is a pen (origin unknown).

ส่วนห่าน

Goose (plural: geese) is the English name for a considerable number of birds, belonging to the family Anatidae. This family also includes swans, most of which are larger than geese, and ducks, which are smaller.

This article deals with the true geese in the subfamily Anserinae, tribe Anserini.

A number of other waterbirds, mainly related to the shelducks, have "goose" as part of their name. These are dealt with later on.

และนี่คือเป็ด

Duck is the common name for a number of species in the Anatidae family of birds. The ducks are divided between several subfamilies listed in full in the Anatidae article. Ducks are mostly aquatic birds, mostly smaller than their relatives the swans and geese, and may be found in both fresh water and sea water.

Most ducks have a wide flat beak adapted for dredging. They exploit a variety of food sources such as grasses, aquatic plants, fish, insects, small amphibians^[1], worms, and small molluscs.

Ducks are sometimes confused with several types of unrelated water birds with similar forms, such as loons or divers, grebes, gallinules, and coots.

Many species of duck are temporarily flightless while moulting; they seek out protected habitat with good food supplies during this period. This moult typically precedes migration.

Some duck species, mainly those breeding in the temperate and Arctic Northern Hemisphere, are migratory; those in the tropics, however, are generally not. Some ducks, particularly in Australia where rainfall is patchy and erratic, are nomadic, seeking out the temporary lakes and pools that form after localised heavy rain.

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ลิเวอร์พูล 1-2 บาร์นสลี่ย์
(พาดหัวจาก soccersuck: ลาตูบบวช!หงส์ช็อกโดนยิงทดเจ็บร่วงเอฟเอ ... อนุโมทนาจ้ะ)
แมนฯยู 4-0 อาร์เซนอล
(พาดหัวจาก soccersuck: ปืนบรื๋อออ์!ผีต้อนตือหน้าหงาย4-0 ... สรุปว่าผมไม่ใช่ตัวซวย เห็นมั้ย)

ปล2. ตอนนี้ผมยิ่งสงสัยมากขึ้นแล้วว่านกที่ซาฟารีเวิลด์อาจจะเตะบอลเก่งกว่าสัตว์ปีกบางชนิดจริงๆก็ได้