Telegram Group & Telegram Channel
小燕子,穿花衣。

家燕的体型小巧,树麻雀和它比起来都会显得大一些。

离得远,它们看起来黑黢黢的,下巴一撮儿红色很明显,离得近,在阳光的照射下,羽毛本身有色素沉淀,除此以外,羽毛的物理特质使得在一些角度看,因散射、干涉或衍射的产生出的结构色,复合呈现出五彩斑斓的蓝色。

照片中可以看到羽毛部分:从结构上分类看是正羽,从功能上分类是飞羽。

春季,燕子忙着筑巢抚育下一代,因此,它们会为了找寻建筑材料,多次往返很是辛苦。

马上它们就要多起来了~

#观鸟 #北京观鸟 #鸟类摄影 #家燕



tg-me.com/knowledge1024/18459
Create:
Last Update:

小燕子,穿花衣。

家燕的体型小巧,树麻雀和它比起来都会显得大一些。

离得远,它们看起来黑黢黢的,下巴一撮儿红色很明显,离得近,在阳光的照射下,羽毛本身有色素沉淀,除此以外,羽毛的物理特质使得在一些角度看,因散射、干涉或衍射的产生出的结构色,复合呈现出五彩斑斓的蓝色。

照片中可以看到羽毛部分:从结构上分类看是正羽,从功能上分类是飞羽。

春季,燕子忙着筑巢抚育下一代,因此,它们会为了找寻建筑材料,多次往返很是辛苦。

马上它们就要多起来了~

#观鸟 #北京观鸟 #鸟类摄影 #家燕

BY 你不知道的冷知识






Share with your friend now:
tg-me.com/knowledge1024/18459

View MORE
Open in Telegram


你不知道的冷知识 Telegram | DID YOU KNOW?

Date: |

Telegram announces Search Filters

With the help of the Search Filters option, users can now filter search results by type. They can do that by using the new tabs: Media, Links, Files and others. Searches can be done based on the particular time period like by typing in the date or even “Yesterday”. If users type in the name of a person, group, channel or bot, an extra filter will be applied to the searches.

Should You Buy Bitcoin?

In general, many financial experts support their clients’ desire to buy cryptocurrency, but they don’t recommend it unless clients express interest. “The biggest concern for us is if someone wants to invest in crypto and the investment they choose doesn’t do well, and then all of a sudden they can’t send their kids to college,” says Ian Harvey, a certified financial planner (CFP) in New York City. “Then it wasn’t worth the risk.” The speculative nature of cryptocurrency leads some planners to recommend it for clients’ “side” investments. “Some call it a Vegas account,” says Scott Hammel, a CFP in Dallas. “Let’s keep this away from our real long-term perspective, make sure it doesn’t become too large a portion of your portfolio.” In a very real sense, Bitcoin is like a single stock, and advisors wouldn’t recommend putting a sizable part of your portfolio into any one company. At most, planners suggest putting no more than 1% to 10% into Bitcoin if you’re passionate about it. “If it was one stock, you would never allocate any significant portion of your portfolio to it,” Hammel says.

你不知道的冷知识 from cn


Telegram 你不知道的冷知识
FROM USA