It rained and it rained and it rained but this Gull just took it it in stride perched on a magnificent weathered log along the Northern California Coast.
That is a question a team of biologists have been asking for quite some time and, as is typical in science, the answer was not what they first expected. Previous studies conducted by this same laboratory concluded that coot parents preferentially feed chicks that display brighter coloration. The goal of the present study was to determine why this was the case.
The researchers noted that coots lay between 8-10 eggs and these eggs hatch in the order they were laid. Additionally coots are nest predators and lay eggs in other coots nests. One hypothesis was that the chicks hatched from predatory eggs were the more brightly colored chicks and thus would have gotten fed more. This turned out to be false. The researchers discovered that the chicks hatched from the latter laid eggs were the more brightly colored. Typically chicks hatched latter in a brood have to catch-up to their larger siblings if they are to survive. The researcher noted that if these smaller and brightly colored latecomers survived the parents would use their coloration as a way to preferentially feed these chicks more and allow them to catch-up to their earlier siblings. 2
A wonderful survial strategy reveled in a nicely done study. Hat’s off to science and to the coot.
1. University of California – Santa Cruz. “The mysterious case of the ornamented coot chicks has a surprising explanation: The bright colors of the chicks of American coots help their parents choose favorites, according to a new study.” ScienceDaily. ScienceDaily, 31 December 2019. www.sciencedaily.com/releases/2019/12/191231111817.htm.
2. Bruce E. Lyon, Daizaburo Shizuka. Extreme offspring ornamentation in American coots is favored by selection within families, not benefits to conspecific brood parasites. Proceedings of the National Academy of Sciences, 2019; 201913615 DOI: 10.1073/pnas.1913615117
Noisy yes, but oh so beautiful, especially in flight, a Black-billed Magpie sits quietly on a snowy afternoon. The magpies in our area are very skittish and difficult to sneak up on for a photograph. We see them all the time but even a quick look in their direction has them flying away.
“Historically associated with bison herds, it now lands on the back of cattle to clean ticks and insects from them. Large predators such as wolves are commonly followed by black-billed magpies, who scavenge from their kills. The species also walks on the ground, where it obtains such food items as beetles, grasshoppers, worms, and small rodents.”
Intelligent and pretty good looking and a fine way to brighten a cold snowy day.
I really don’t know how you could dress better than this?
Feeling right at home in a lichen filled forest.
Both us and the Canada Jay.
With the tips of a sage bush just poking above the snow a Raven endures the winter winds and cold while searching for the next meal.
From afar a black and white scene yet bursting with color the closer we got.
Happy Friday and a great weekend to all.
We don’t know about you but we tend to get over ambitious at times with books, especially reading them. Five or six books sitting proudly on the coffee table in living room each with a bookmark placed about 1/3 into the book. Each book calling your name when you plop down on the sofa to relax. You sit and stare back at them silently wondering how you will finish them all before they are due at the library. You get through one or two wonderful books but always feel like your not reading enough as you solemnly remove the bookmarks form the remaining three and whisk them off and into the return slot at the library. So this year it’s only one book at a time- from front to back- all the way though.
We recently came across a wonderful four part series on the best nature books of 2019 written by the Chicago Review of Books
. It is a very diverse list of nature books that will provide us some guidance in choosing and reading our one-book-at-a time in 2020.
Here are links to each of the four posts. The author of the articles Amy Brady stated in the part four of this series that this year has been the best in recent memory for nature writing. Looking though the lists is almost as fun as reading the books listed.
Anything catch your eye as a first read from these lists. Maybe because it’s winter and darkness comes early the book Dark Skies: a journey into the wild night By Tiffany Francis-Baker sounds like it might be first up this year.