19 de marzo de 2023

FJ4: Social Behavior & Phenology

Luke Lombardo

Date: March 15th, 2023
Location: Banff, Alberta, Canada
Weather: 15 Fahrenheit, light snow, partly sunny, southwest wind.
Habitat: Subalpine ecoregion, lodgepole pine, Englemann spruce, and subalpine fir dominated forest.
Start time: 5:00pm
End time: 6:30pm

During this spring break I was able to travel out to Banff National Park located in Alberta, Canada, where I got the chance to do some excellent birding. For this excursion, I had planned to walk through the town of Banff, into a trail along the Bow River that is surrounded by a coniferous forest. It was not long before I spotted two Black-billed Magpies, and three Canada Jays.
Firstly, I came across the Black-billed Magpies that immediately struck me as a unique species. They were very vocal birds, and their call can be described as a “wock-wock-wock” harsh noise. It’s hard to know what they were saying to each other, however I believe they were letting one another know where they were located. There is an old superstition regarding magpies, saying that the number of individuals spotted tells the observer whether they will have good or bad luck. It goes as follows.
“One for sorrow, two for joy, three for a girl, four for a boy, five for silver, six for gold, seven for a secret never to be told”. I am fascinated by this as I spotted two of them and had so much joy my whole trip. It seemed to me as if the Black-billed Magpies were resting, because they were observed sitting on top of a street sign, not showing any signs of foraging. The resting and lethargic behavior indicates circadian rhythm. Later, I was able to spot three Canada Jays who were observed foraging. They were flying in short patterns, foraging small nuts, seeds, and leftover food from humans on the sidewalk. It seemed to me as if they were communicating by following one another, perhaps showing each individual where the food is. The Canada Jay was a rather quite species that was following its circannual rhythm.
Both species, Black-billed Magpies, and Canada Jay had similar plumage. The white chest in both birds were very bright which allows them to blend into the snow easily. However, the Black-billed Magpie had a dark black back and head, compared to the lighter gray back and head of the Canada Jay. I believe this plumage pattern to be beneficial in a snowy habitat because they can hide from predators better than others.
As I was observing the Canada Jays, I experimented using the pshhhh sound to see what effect it would have on their behavior. The Canada Jays were not attracted by it, seemingly they were scared and flew away for a few minutes. I believe they had this reaction because it is a rather unusual noise for quite forests of Banff. However, the noise sure did alter the behavior of the birds.

Publicado el 19 de marzo de 2023 a las 01:00 AM por lukelombardo lukelombardo | 2 observaciones | 0 comentarios | Deja un comentario

04 de marzo de 2023

FJ3-Field Observation: Ecological Physiology

Date: March 2nd, 2023
Start Time: 4:00pm
End Time: 5:00pm
Location: Oakledge Park, South End, Burlington VT
Weather: 34 Fahrenheit, Light snow, mostly cloudy, Northwest wind (11.18 mph)
Habitat: Mixed Forest, lake shoreline

Birding can be very engaging most of the time, however there are many instances when you take a walk and not see much activity at all. This birding walk that I conducted for journal entry three seemed to be one of those instances.
Oakledge park was my point of interest for this walk. The precipitation was slight to moderate snow with the sky being mostly cloudy, and it was relatively chilly since I was right on the shoreline of Lake Champlain. Much of my time was spent more inland where the mixed forest grew increasingly denser, however I did not observe a single bird while in this location. As I moved out of the woods and into a clearing, I noticed a small sign indicating a wetland restoration project in progress. Specifically, the restoration involved a “no mow zone” approach combined with over 1,000 bird friendly plantings. Bird friendly species that were planted include native Serviceberry, Black Willow, Red Maple, and Gray Birch. I was under the assumption that I would observe a bird in this area for sure, though my hopes were not met. It was not until my walk out of the woods when I had my first birding observation, as I looked up into the sky and noticed a murder of American Crows all flying together. There seemed to be at least a dozen of these crows although it was hard to be accurate is it was nearing dusk and there were so many. Nevertheless, all of these crows were following the same flight pattern
Seeing all these crows together as the sun was going down made me wonder if they were all one big family heading home for the night. I have learned that these flocks of crows do come together and roost up in trees at night for a specific reason, to retain body heat as a group. Another reason for these communal groups is to provide protection from predators as there is strength in numbers. However, each morning as the temperature warms, these crows leave the roost and fly in their own direction as they forage for food. Diet of American Crows in the winter consists of grain, seeds, nuts, animal carcasses, and even garbage from humans. While on my walk, I did make several notes of where I located snags and their relative cavity sizes. Unfortunately, as I banged on a few different snags with these cavities, it appeared as if nobody was home. However, it is known that these snag cavities are crucial nesting spots for species such as Pileated or Downy Woodpeckers or Sapsuckers. Snags and cavities also attract many species of insects which have a huge role in the diet of said woodpeckers.

Publicado el 04 de marzo de 2023 a las 01:17 AM por lukelombardo lukelombardo | 1 observación | 0 comentarios | Deja un comentario

20 de febrero de 2023

FJ2: ID and Flight Physiology

This President’s Day weekend, I got the chance to take a trip up to Entrelacs, Quebec and into the backwoods. It provided me with a great opportunity to do some field observations, particularly on bird identification, and flight physiology.

Date: February 20th, 2023
Start Time: 4:00 pm
End Time: 5:00 pm
Location: Lac Des Iles, Entrelacs, Quebec
Weather: 27. Fahrenheit, 7mph wind from the northwest
Habitat: Temperate mixed forest, frozen lake.

I began my observation by walking across the frozen Lac Des Iles, keeping my eyes peeled. As I was on the middle of the lake, I heard an American Crow giving out its call. I was able to hear it before I saw it with my own eyes, and then there it was soaring through the air. As I observed, I noticed that the American Crow flapped its wings two strong times at an angle, into the wind. The crow then turned around, putting the wind at its back using it to soar several hundred yards without flapping its winds. It seemed like the crow did this as a routine or pattern, repeating the same route several times.
Once I crossed the lake, I hunkered down into the mixed forest and sat in silence to listen for any calls or songs. It was eerily quiet, and I felt like I was the only living thing within miles until all the sudden a singular Black-capped Chickadee came swooping over my head. It landed on a branch above me, and we observed each other for several minutes. It made me wonder what the Black-capped Chickadee was thinking of me. The flight pattern was very different than that of a crow as it flapped its wings repeatedly, zig zagging below the tree line. I noticed how much easier the chickadee seemed to be able to maneuver its way through the dense deciduous trees compared to the crow high up in the air. These differences can be attributed to each species habitat niche and wing size, a chickadee is not able to soar through the air headfirst into the wind simply because it is not built for that sort of flight with its small wings and body.

Publicado el 20 de febrero de 2023 a las 11:22 PM por lukelombardo lukelombardo | 2 observaciones | 0 comentarios | Deja un comentario