 One bird will approach another with an indescribable squeaking sound, bowing all the time. If the other bird feels like performing, which Is usually the case, he bows in return. They cross bills very rapidly several times. Then one bird turns its head...  The Wilson Bulletin - Стр. 1721916Полный просмотр - Подробнее о книге
 | 1912 - Страниц: 832
...usually the case, he bows In return. They cross bills very rapidly several times. Then one bird turns its head and lifts one wing in such a manner that the primaries point directly out fit the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing... | |
 | 1912 - Страниц: 828
...usually the case, he bows in return. They cross bills very rapidly several times. Then one bird turns its head and lifts one wing in such a manner that the primaries point directly out fit the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing... | |
 | 1911 - Страниц: 626
...usually the case, he bows in return. They cross bills very rapidly several times. Then one bird turns its head and lifts one wing in such a manner that the...primaries point directly out at the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing of a horse. The bird taking... | |
 | Alexander Hume Ford, George Mellen - 1922 - Страниц: 704
...usually the case, he bows in return. They cross bills very rapidly several times. Then one bird turns its head and lifts one wing in such a manner that the...primaries point directly out at the side. In the meantime, the other bird keeps up a loud noise that sounds somewhat like the neighing of a horse. The bird taking... | |
 | 1911 - Страниц: 392
...usually the case, he bows in return. They cross bills very rapidly several times. Then one bird turns its head and lifts one wing in such a manner that the...primaries point directly out at the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing of a horse. The bird taking... | |
 | 1912 - Страниц: 852
...usually the case, he bows in return. They cross bills very rapidly several times. Then one bird turns Its head and lifts one wing in such a manner that the...primaries point directly out at the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing of a horse. The bird taking... | |
 | 1912 - Страниц: 832
...usually the case, he bows in return. They cross bills very rapidly several times. Then one bird turns its head and lifts one wing in such a manner that the...primaries point directly out at the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing of a horse. The bird taking... | |
 | 1912 - Страниц: 834
...return. They cross bills very rapidly several times. Then one bird turns its head and lifts one wing iu such a manner that the primaries point directly out at the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing of n horse. The bird taking... | |
 | 1912 - Страниц: 832
...usually the case, he bows in return. They cross bills very rapidly several times. Then one bird turns its head and lifts one wing in such a manner that the primaries point directly out nt the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing... | |
 | 1912 - Страниц: 840
...bills very rapidly several times. Then one bird turns Its head and lifts one wing in such a niiuiner that the primaries point directly out at the side. In the meantime the other bird keeps up a loud noise that sounds somewhat like the neighing of a horse. The bird taking... | |
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