ארכיון יומן של מרץ 2017

מרץ 10, 2017

Field Observation 2

I went on a 2 hour excursion to Centennial woods on Wednesday, March 8. I started the excursion at about noon. Right on the edge of the woods when I got there I saw 3 American Crows in a yard. They weren't doing anything, just standing in the middle of the yard. I got into the woods and immediately saw a white-breasted nuthatch. The nuthatch was fluttering from tree to tree, so I followed it and eventually it stuck to one of the trees and started hopping vertically down the trunk. This was the foraging pattern of the nuthatch; that's how it moves down the trunk to hunt for bugs. Nuthatches also forage for nuts and seeds to store for winter so they have enough food to survive.
Black-capped chickadees were all over the woods, but I only saw a few of them. I was able to hear their call and song pretty much everywhere I went, but only was able to spot about 5 of them. The ones I saw were pretty high up in the branches as well, so that may be why I didn't see many. If I buy some binoculars I may be able to see some more. Black-capped chickadees survive the winter by having thick winter coats and storing food in secluded roost cavities. Titmice are similar to chickadees and nuthatches because they forage for nuts and seeds and store them for winter as well. Titmice also nest in nooks in trees, but can't make them themselves, so they have to find ones that are already made.
I spotted one downy woodpecker near the exit of the woods. I had heard the pecking noise so I followed it until I saw the bird on a tree. I could tell this was a downy woodpecker rather than a hairy woodpecker because the beak was relatively short compared to its body.There were several holes below the bird, which meant that the woodpecker was most likely moving up the tree after pecking each hole. The woodpecker would peck, a few times, stop, and repeat. Downy woodpeckers peck holes in trees to find bugs that are under the surface of the tree bark. They also don't sing songs; they use the pecking sound for communication.

פורסם ב מרץ 10, 2017 05:50 לפנה"צ על־ידי nickvance17 nickvance17 | 5 תצפיות | 0 תגובות | הוספת תגובה

מרץ 24, 2017

Field Observation 3: Huntley Meadows Park

On this excursion, I saw a lot of amazing birds! I went to Huntley Meadows Park in Virginia over my spring break. I started on the woodland trail and not a lot was out and about, but when I arrived at the marsh area, many species were singing and calling. I first saw an eastern phoebe, which immediately started chirping to its partner when it saw me. I assume that was a warning that danger might be afoot. They were very wary of me and flitted around whenever I got close. I then saw/heard several red-winged blackbirds, which were incredibly loud. I saw several loudly call and display their red plumage at the same time, presumably defending their territory. I saw two gaggles of canada geese as well, and they were extremely loud. They would not stop honking at each other the entire time they were swimming in the marsh. Occasionally two geese would honk at each other and fly at each other like they were arguing or trying to display dominance. There were many black-capped chickadees around, and they were all hopping between and pecking at the reeds in the marsh. I also saw an american coot, and when it saw me it used its wings and legs to run away from me on the water. I caught a glimpse of its feet, I had never seen anything like it.

I saw an amazing colorful wood duck in the marsh. This bird was beautiful, and I've been told he has a mate as well. Bright colored feathers are used to attract mates, and it is especially obvious in birds like the wood duck. In species like the american crow, bright plumage is not used to find a mate. They members of a group usually pair up and make nests during breeding season. With the crows' all black plumage, they can hide from potential predators much more easily than a wood duck can. The wood duck most likely has a very difficult time camouflaging because of the colorful plumage.

Something really amazing I witnessed was a great blue heron trying to find some fish to eat. This heron dragged one of its feathers over the surface of the water to try and get the attention of the fish in the water. The heron could have possibly been trying to mimic a water bug. This behavior fits into the bird's circadian rhythm because the body regulates processes on a schedule and that was obviously when the body told the bird that it was time to feed. I also witnessed a pair of mallards diving for fish together. It was obviously their time to eat as well.

פורסם ב מרץ 24, 2017 04:52 לפנה"צ על־ידי nickvance17 nickvance17 | 12 תצפיות | 0 תגובות | הוספת תגובה

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