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北京的沙河在国内外观鸟爱好者的心理中都有一定地位。

而由于近年来政府批准湿地公园项目因素,河道被硬化和修葺的情况导致一部分动物无法再正常生活在这里,很遗憾。

往年大量的鸟类如今还有多少回来,都是未知数。

河道硬化原本是对河道治理的一种方式,比如北京二环护城河河底,在2004年左右清淤硬化,将护城河整理的很漂亮。

这样的管理方式适合城市规划,然而,在自然环境中,这种方式会使得何地生物无法生存。

鹬蚌相争这个成语大家并不陌生,甚至还有一部动画讲过这样的故事。

这组成语中,鹬是一种涉禽,蚌是一种生活在溪流底部的贝类。

河道硬化的方式处理河道后,贝类则无法在硬化后的河流出现,进而依靠捕食贝类的鹬则会选择其他食物充沛地方继续生活。

近年来,鹬科类鸟类在沙河地区出现的规模很小了。

除了食物数量减少,还有气温的因素,好在不远的官厅水库,似乎成为了它们的新落脚点。

图一和图三是黑翅长腿鹬,几年前它们出现的位置,现在因为河道截流已经干涸。

图二可能是大白鹭。

#鸟类摄影#观鸟#北京观鸟



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北京的沙河在国内外观鸟爱好者的心理中都有一定地位。

而由于近年来政府批准湿地公园项目因素,河道被硬化和修葺的情况导致一部分动物无法再正常生活在这里,很遗憾。

往年大量的鸟类如今还有多少回来,都是未知数。

河道硬化原本是对河道治理的一种方式,比如北京二环护城河河底,在2004年左右清淤硬化,将护城河整理的很漂亮。

这样的管理方式适合城市规划,然而,在自然环境中,这种方式会使得何地生物无法生存。

鹬蚌相争这个成语大家并不陌生,甚至还有一部动画讲过这样的故事。

这组成语中,鹬是一种涉禽,蚌是一种生活在溪流底部的贝类。

河道硬化的方式处理河道后,贝类则无法在硬化后的河流出现,进而依靠捕食贝类的鹬则会选择其他食物充沛地方继续生活。

近年来,鹬科类鸟类在沙河地区出现的规模很小了。

除了食物数量减少,还有气温的因素,好在不远的官厅水库,似乎成为了它们的新落脚点。

图一和图三是黑翅长腿鹬,几年前它们出现的位置,现在因为河道截流已经干涸。

图二可能是大白鹭。

#鸟类摄影#观鸟#北京观鸟

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Telegram hopes to raise $1bn with a convertible bond private placement

The super secure UAE-based Telegram messenger service, developed by Russian-born software icon Pavel Durov, is looking to raise $1bn through a bond placement to a limited number of investors from Russia, Europe, Asia and the Middle East, the Kommersant daily reported citing unnamed sources on February 18, 2021.The issue reportedly comprises exchange bonds that could be converted into equity in the messaging service that is currently 100% owned by Durov and his brother Nikolai.Kommersant reports that the price of the conversion would be at a 10% discount to a potential IPO should it happen within five years.The minimum bond placement is said to be set at $50mn, but could be lowered to $10mn. Five-year bonds could carry an annual coupon of 7-8%.

That growth environment will include rising inflation and interest rates. Those upward shifts naturally accompany healthy growth periods as the demand for resources, products and services rise. Importantly, the Federal Reserve has laid out the rationale for not interfering with that natural growth transition.It's not exactly a fad, but there is a widespread willingness to pay up for a growth story. Classic fundamental analysis takes a back seat. Even negative earnings are ignored. In fact, positive earnings seem to be a limiting measure, producing the question, "Is that all you've got?" The preference is a vision of untold riches when the exciting story plays out as expected.

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