Osprey Archives • PAUL ROEDDING PHOTOGRAPHY

IMG 1364 1 - April Fools Day Brings New Species To London, Ontario; And That's No Joke — Osprey made their return to London on Monday and have already been spotted at one of the nests within the city.

Monday’s high temperature of sixteen degrees Celsius accompanied by south winds brought with it some new species of migrating birds. It may have been April Fools Day but the birds arriving in our area were no joke.

South winds help push birds along during spring migration. Any day that is significantly warmer in late March or early April, along with a south wind, is a great day to go birding. The weather we experienced on Monday fit this to a T. New arrivals to London included: Osprey, Tree swallows, and the Eastern Phoebe.

Several Osprey sightings were reported, with birds being seen in Springbank Park, Greenway Park, over the Coves, as well as a pair retuning to the nest at Labatt Park. The Osprey feeds almost exclusively on fish so with the Thames River being free of ice, food won’t be a problem. For more information on the Osprey see my previous blog post Spring Marks The Return Of Osprey To London, Ontario.

IMG 3501 1 - April Fools Day Brings New Species To London, Ontario; And That's No Joke — The Eastern Phoebe is a member of the flycatcher family and eats mostly insects.

Tree Swallow’s and Eastern Phoebe’s diet consist of insects, so with cooler temperatures in the forecast for the remainder of the week, these birds may have a bit tougher time than the Osprey. The Cornell Lab of Ornithology’s All About Birds website indicates that the Eastern Phoebe will also eat small fruits and seeds when insects are scarce. It also states that the Tree Swallow will consume plant foods during these same conditions. Hopefully these species will find enough food to replace energy spent on their migration north. April 1st is not early by any means for these birds to return to our area, in fact they are right on time. According to local records, the average arrival date over the past 80 years for the Tree Swallow and Eastern Phoebe is March 28th and March 26th respectively.

IMG 1612 1 - April Fools Day Brings New Species To London, Ontario; And That's No Joke — Tree Swallows are also back in the city, and like the Eastern Phoebe are likely going to have to resort to alternate foods in order to survive.

Tundra Swans have been making their way across Southwestern Ontario, and along with them many dabbling ducks. American Wigeon, Wood Ducks, and Blue-winged Teal have all been seen on the Thames River. As more lakes, rivers, and ponds become clear of ice, waterfowl will become more abundant. Fanshawe Lake, Westminster Ponds, and Komoka Ponds are all great places to view migrating ducks once the ice is gone.

IMG 9921 1 - April Fools Day Brings New Species To London, Ontario; And That's No Joke — The Blue-winged Teal is one of the many dabbling ducks that is retuning to our area.

Looking ahead to the Environment Canada extended forecast I don’t see any days that appear to have a real spike in high temperatures or south winds. This doesn’t mean you shouldn’t get out birding; any day is a great day to bird, and there is always plenty to see around our great city.

Good birding,
Paul

9631203552 5f07d79408 o1 - Spring Marks The Return Of Osprey To London Ontario — The Osprey is a large raptor that feeds almost exclusively on fish. They can be found around almost any body of water in our area from April-October.

The Osprey is a large member of the raptor family that feeds almost entirely on fish. They can be found around any body of water from lakes and reservoirs to rivers and ponds. Since the ban of DDT their numbers have increased and can be readily found in the London area once they return in early spring from their wintering grounds, which stretches from the southern United States to Central and South America. Ospreys are tolerant of human activity and several pairs nest within the city limits in parks, Environmentally Significant Areas and along the Thames River.

Ospreys construct their nests of sticks and line them with bark and grasses. The nest is placed in an open area where an easy approach can be made. Look for Osprey nests in tree tops, crotches between tree branches or manmade structures such as telephone poles and lights posts. Ospreys usually mate for life and will reuse the same nest from year to year adding material to it each year. Nests can be as large as 13 feet deep and 6 feet across. Clutch sizes are 1-4 eggs with incubation lasting 5 weeks. Both adults take care of the brood and fledging takes place after 8-10 weeks.

IMG 5501 1 - Spring Marks The Return Of Osprey To London Ontario — This Osprey is landing on a nest constructed on the top of a light pole illuminating a neighbourhood baseball diamond.

As with most raptors Ospreys have incredible vision and can spot fish underwater from heights of over 100 feet. Once a fish is spotted the Osprey briefly hovers overhead before diving feet first into the water. The Osprey is specially adapted for a fish diet with closable nostrils to keep water out, reversible outer toes and backwards facing scales on their talons to help hold onto fish.

9675028020 d03cfa095c o1 - Spring Marks The Return Of Osprey To London Ontario — The Osprey is the only large raptor with a solid white belly. This is a key to identification and helps distinguish them from a juvenile Bald Eagle and other birds of prey.

Most years Ospreys start to reappear in the London area in early April. Given the cold winter and increased amount of ice across their migration route it may be later this year, unless we experience a significant warm up. Keep an eye out along river banks and shorelines of lakes and ponds once the ice is off. Ospreys are sometimes confused with Bald Eagles but there are several things to look for when identifying them. Mature Bald Eagles are larger and much stockier than the rather slender Osprey and have a solid white head and tail. The body of a mature eagle is solid brown, with the Osprey being a mix of brown and white. Ospreys are the only large raptor with a solid white unmarked belly. Juvenile Bald Eagles are mottled on their undersides and lack a white head.

Keep an eye to the sky and in tree limbs overhanging bodies of water in your favourite birding area. If you see a large brown and white raptor there is a good chance you’ve just spotted an Osprey.

Good birding,
Paul

Tag: Osprey

April Fools Day Brings New Species To London, Ontario; And That’s No Joke

Spring Marks The Return Of Osprey To London Ontario

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