孤独的沙丘鹤满感人的。一雄一雌制的沙丘鹤对伴侣的忠诚是传奇的。

来源: 雨婷她爹于 2017-05-27 06:15:23 [档案] [博客] [旧帖] [给我悄悄话] 本文已被阅读：次 (4835 bytes)

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上周我贴了：

一只沙丘鹤每晚站在湖边一个固定的地方,孤零零地,觉得好可怜, [我爱我家] - 雨婷她爹(509 bytes ) 2017-05-21

我现在每晚沿小区外公路旁的自行车道和人行道走一万步。每晚都看见一只沙丘鹤独自站在池塘旁边,孤零零的。满可怜。我想我看到的那只沙丘鹤可能是丧偶了,所以很悲哀。沙丘鹤大部分时间是群居的。

先看我周二用手机照的,还有我走路的自行车道和行人道。

再看我昨晚用傻瓜像机照的几张那只沙丘鹤。是不是好看点?

最后看看我google到的沙丘鹤资料,满感动人的。

沙丘鹤是一雄一雌制(看百度资料)。伴侣关系维持数十年(Pair bonds endure for decades ),当一个伴侣死亡时,幸存的配偶的行为与鸟类悲伤的潜在情感是一致的(When one partner dies, the behavior of the surviving spouse is consistent with an underlying emotion of bird grief)。沙丘鹤对场所和伴侣的忠诚是传奇的(Site and mate fidelity are legendary among cranes)。(看第二个资料)。

我觉得沙丘鹤比有些人强。

沙丘鹤_百度百科

第二个资料: http://www.christyyuncker.com/AreCranesSocial.html

Crane social structure is based in the family.

The fundamental unit of crane social structure is a "nuclear family" - two parents and one or two colts. The adults have a working partnership. Both help make the nest, incubate the eggs, and educate their young.

Young colts migrate south in the family unit, over-winter with their parents, and are commonly seen with parents at spring staging areas like along the Platte River in Nebraska. Colts become independent as they complete their first full migration. In the seven times that Millie and Roy migrated south with their colt in the fall, the colt was absent on their return next spring.

Pair bonds endure for decades.

Cranes establish pair bonds in their second or third years1 and the two individuals remain together throughout the year. Unison calling, purring, dancing, and perhaps pheromones, nourish the tight pair bond. Usually the pair bond persists as long as both cranes survive, which can be 20-30 years.

When one partner dies, the behavior of the surviving spouse is consistent with an underlying emotion of bird grief.

If nesting attempts are runsuccessful, divorce may follow. Dr. Bernhard Wessling used sonograms of crane calls to identify individual call signatures that distinguish particular European cranes in a marshland near Hamburg, Germany. Except for one case of divorce, the pairs stayed together and tended to nest in the same territories from 1997 through 2004. In Florida ssandhill cranes, finding a new partner is common after divorce or death of one of the pair1.

Are cranes neighborly?

Site and mate fidelity are legendary among cranes. On the basis of photographs, body language, unison calls, and behavior, Millie and Roy are the same cranes we have watched since 1995.

We often hear Millie and Roy unison calling and being answered by other cranes in the valley, probably from ponds that are a few kilometers from each other. If Roy and Millie's calls are not reciprocated, Roy may fly off, apparently to investigate. We suspect that these conversations might be more than territorial defense. The Goldsteam crane community may have social structure. The crane calls we hear in Goldstream Valley suggest a similar cluster of territories but we lack enough data to know if the neighborhood is stable from year to year.

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Referenece

SA Nesbitt, MJ Folk, ST Schwikert, & JA Schmidt, 2001. Aspects of reproduction and pair bonds in Florida sandhill cranes. Proceedings North American Crane Workshop 8:31-35.