12 October 2024
Good Morning Everyone,
15 C with blue skies and sun on Friday but it is nippy Saturday morning reminding everyone that fall is certainly here. We have wind and the dry leaves are dancing off the branches of the trees today. The Starlings arrived early for their suet and the little birds are eating seed and having baths. I am perplexed that we have, or seemingly have only one little Red Squirrel, when in the spring there were at least five. Dyson and the three kits are here as are the Blue Jays and Crows. Mind you, the Crows caw for cheesy dogs but are really wanting peanuts right now!
The Girls have been checking the cat food drawer. It is getting stocked up for our week away along with the food for the outdoor kitties and other garden animals. It feels a bit like getting ready and having a dormitory of teenagers to feed. It is definitely taking longer to get them organised than it will me.
The trip is going to be a little different. One of my former teaching and research assistants when I was at Acadia University lives in the area and after a couple of decades we are going to have coffee and goodies and catch up. Another potter that I wrote about several years ago, Susan Delatour, lives near Lunenburg and we plan to catch up and see the birds around the island where she has her studio. Hopefully there will still be migrants and some eagles will be on hand. The Maritimes are gorgeous this time of year. People travel from all over to see the changing colour of the leaves in mid-October. I hope to have some nice images for you.
There is not a lot happening in Bird World which is why it is a good time to take a wee break. The little falcons are growing like crazy. The Sea Eaglets need to get on with their branching and it appears that Wilko and Kasse, the osplets at Port Lincoln, are going to be a bit of a handful and a joy to Mum and Dad. Many of the cameras are still down including Captiva Eagle cam and NE Florida where the residents of the area are without power, tens of thousands of them. It could be some time before the cam is running again and we find out what is happening in ‘As the Nest Turns’. Maybe this year it will stop turning and Gabby and Beau will settle and raise some eaglets. I sure hope he is up to the task!
Isn’t this sad. No Menhaden in the Chesapeake Bay. None. Zippo. This is precisely why a moratorium is needed.
Let’s hope Clive kept his tail down in that nest as it is OK!
Ron showed up at the WRDC nest looking like he had had some prey. He is looking good. Now, where is Rose?
This was on the Loch Arkaig FB page. I am posting it here so you can see how remarkable these ospreys are. Look at that distance flown in a short amount of time!
Karl II’s son (2022) Waba making progress to Chad.
I wonder if your local wildlife rehab clinic could use any hollow logs you have in your garden? We keep ours so they disintegrate and we have insects for the spring birds but maybe you don’t do that…
News from Ranger Judy Harrington and the Olympic Sea Eagles.
And more from Olympic Park: A says, “At WBSE, we still have our two eaglets, settled in for the night side by side, duckling style, exactly as they have done for the past week or ten days. Here is today’s ranger report:
October 12: A cooler morning with all awake early and all joining in a chorus. Mating at 7:06 (in front of the children, too, and certainly recreational rather than procreational), then both were off. Good hunting this morning, as both returned with gull nestlings just after 7am. Lady fed both eaglets – a long feed with some self-feeding as well. SE33 managed to swallow the leg scrap at one stage. Later, both eaglets were flapping and jumping in the wind. Around 8:30am, SE33 was up onto the branch – so close to branching? Later, SE34 spent time on the rim as well. Then later, after 2pm, definitely branching – SE33 in the ninth week since hatch, at 67 days . More food arrived when Dad brought a fish piece in at 13:26 and Lady fed both eaglets. She brought in another bird herself at 15:37 – a good prey day again.
These two eaglets are the best of friends and are really enjoying lounging about the house without their parents. It’s a wonder they don’t throw a teen party. But please, stay as long as you like – we are in no hurry to see you go. “
The nest at SW Florida is just fine. https://youtu.be/36VTljFZHV4?
Wilko and Kasse wanting fish. It is now past 1200 and no fish! Mum has sat on them to keep the peace. There were four the day prior. This is not good and underlines the importance of the fish fairies at this nest. It is not clear why there are fish some days and not others. See discussion of osprey fishing later in the post. We know, however, that the survival of the two chicks last year rested entirely on the fairies and the dedication of the Port Lincoln Osprey committee.
A small partial fish came in quite late, around 1243.
Perfectly behaved. Beautiful little osplets. Aren’t they the most adorable things you have ever seen?
‘A’ and her unique remarks: “Dad brought in a big, very much alive perch at 19:09:37 and it was very floppy indeed, knocking both osplets for six. Both quickly regained their footing and were up for a feeding. Wilco got the early bites but mum was very careful to feed both osplets. The fish continued to flop about, escaping mum at about 19:14 and having to be recaptured. This helped Kasse, who had been behind Wilco but now got to the front. From this stage of the feeding, Kasse did slightly better than Wilco, so they ended up eating about the same amount. They are very strong little feeders, both holding their heads up, beaks open, and starting to handle bigger bites now. They love their fish and both quickly develop sizeable crops. This is a very large fish, so there’s plenty for the chicks and mum to eat, dad to remove the fish and have his share, and then return the remainder of the fish for another feeding. Everyone is going to go to bed with full crops at Port Lincoln.
Despite the very long wait for the first fish of the day today, there was no sign of bonking or dominant behaviour from Wilco when the food did arrive. The feeding was peaceful and amicable, with no aggression and no intimidation. Neither osplet appeared nervous of the other and both were keen to eat. This was a great relief to us all, I’m sure, because that really was the worry today with the kids getting pretty hungry before food arrived. Hunger is an experience that is very problematic on an osprey nest, as we know, so I think the osplets handled their first taste of not getting a taste (if you get my drift) in a very mature manner. I was proud of them.
They truly are the cutest little people, with their racing stripe and their cute little round bottoms. It will be nice to watch their individual personalities emerge over the days to come. Certainly, we already know that neither has a vicious streak and both love their mum and love their fish. So far, they love each other too and snuggle a lot. The only foolproof way I have found to distinguish them is the size of their egg teeth. Of course, Wilco’s is the smaller egg tooth. “
It is 11 C when this image of F23 and the triplets was taken. It will get to 19 C today in Melbourne and hotter with the sun bearing down on the ledge at 367 Collins Street.
A reports: “The sun is getting hot at Collins Street and our wonderful mum is shading her chicks, sprawled out in front of her in the shade she is providing. They have plenty of stretching room in the area she has protected with her body and wings. She stands a lot while shading them, and yesterday was working really hard, beak open, panting heavily. But her babies were totally comfortable and completely shaded. She has this down pat. She does the best mumbrella I have ever seen at Collins Street. As long as she is on the nest, we need not have a single worry this season about the chicks being broiled in the Melbourne summer sun. That’s a HUGE relief. We both know how concerned we have been on occasion at this scrape, waiting for that sun to cross the scrape and for some shade to come. Now, we need not worry about it any more, unless of course for some reason the chicks are left alone. She has not made that mistake thus far. “
Notice the eyes of Diamond and Xavier’s chicks, Yira and Garramma. They are no longer slits but are open and the chicks can now see.
‘A’ remarks: “Darling Xavier got the chance to start the breakfast feeding at Orange this morning – 06:50 or thereabouts and the kids were up and consuming food. Too cute. I do love it when Xavier is allowed to parent. He did a feeding yesterday and he is so careful (as I said the other day, honey I choked a chick is not a sentence Xavier ever wants to utter. It’s funny how he keeps checking over his shoulder in case Diamond arrives and he gets into trouble. TOO adorable. This morning, he gave up his position without an argument when Diamond’s hefty frame loomed in the doorway of the scrape.” And later, “At Orange, little Xavier popped in shortly before 11:40 to find the chicks alone, so he quickly settled in for some quality brooding time. (I love the way he tiptoes across the scrape.) Even with only two, he is still so tiny that he broods them standing up. So tiny compared to Diamond. The chicks are hopeful of food and reach up towards dad’s beak and Xavier reaches down and touches one of the chicks with his beak. Sweet.
But Diamond was gone for only a couple of minutes. When she returned to the scrape at 11:42, poor little Xavier knew any argument was pointless, though he put in a token protest before getting up. I do adore the way Diamond peers around Xavier to see the chicks, as if checking that they have not come to some harm since she left them a couple of minutes ago.
Xavier does not leave the scrape – he simply moves to the ledge, where he continues to perch, looking out. Aww. Family time. Too cute. Xavier is such a sweetie, though I do fear that he will choke a chick one day with all the feathers he feeds the babies. He prepares the food so well at times, and then at other times he brings in something with virtually complete plumage and starts feeding it to the chicks. “
At Growing Home, Bubba is doing really well. Just look at the transition now to the juvenile feathers.
At Achieva, Jack looks down at the mess that Milton made of the nest in St Petersburgh that he shares with his mate, Diane.
Beautiful fall day at the nest of Duke and Daisy at Barnegat Light. Bald Eagles have been passing through on their migration and stopping at this site. It is gorgeous.
Gorgeous day on the Cornell campus home to Red-tail Hawk couple, Big Red and Arthur. Sadly, both of their chicks died after fledging. One from a window collision and the other from West Nile Virus.
Claire was at the US Steel Plant Bald Eagle nest in Pittsburgh on Friday. https://youtu.be/M0W9v2ULPCQ?
Decorah North streaming cam is now live and there is at least one eagle there!
Jackie and Shadow were working on their nest! https://youtu.be/OPwENFsdYK8?
What do you think the biggest threat is to eagles? We will be looking at this as two bills are set to be passed by the US Congress that will impact the Migratory Bird Act.
“Humans are the biggest threat to bald eagles. Much of the bald eagles’ habitat was lost, many of the birds were shot, and they were exposed to widespread contaminants. Between 1917 and 1952, for example, a bounty was placed on bald eagles in Alaska.”
There has been some questions about how often ospreys are successful in catching fish. That is a very loaded and complicated question. It depends on the time of year and the availability of fish. It depends on the water and wind speed. Ospreys only dive down approximately 1 metre or 3 feet tops. They need clearer shallow water. It depends on the temperature of the water. If the water is very warm, the fish dive down to stay cool. That is one of the issues for Olsen at Osoyoos. If we sit and think of the Chesapeake Bay and the fact that Omega could find no Menhaden, it would mean that the ospreys could fish all day and not catch anything. All About Birds says the success rate is 1 in 4 dives. Again, it is complicated and not that straight forward. Observers in the UK note that it often takes 13 dives for an osprey to get a fish.
Dyfi’s findings on success rate vary greatly from those of others published. The Dyfi Osprey Project put out some facts on Osprey fishing:
Fact 31
Ospreys have two main ways of catching fish:
The wet method: Soaring or hovering above the water’s surface from between 10 – 30m, the osprey will dive head and talon first into the water at great speed after identifying a suitable fish prey. After plunging up to a metre under the water, the osprey will surface, position it’s wings above the waterline and with great strength, become airborne from a half submerged position from a stationary position.
The dry method: Rather than hunting at altitude, an osprey will fly almost parallel to the waterline and pluck any surface feeding fish straight out of the water getting only its legs wet. This method is usually used in warmer countries where the fish live near the water’s surface.
Fact 32
Ospreys will catch anything from tiny minnows weighing only a few grams to fish that weigh up to the size of the osprey itself – up to 2Kg or 4½ pounds. Most however, are around a pound in weight or less.
Fact 33
Because ospreys live on all continents on earth except Antarctica, they have a huge variation of fish species they catch. The old English name for osprey is ‘Mullet Hawk’ which gives us a pretty good idea what their main fish prey species in the UK was (and actually, where they nested) before they were persecuted to extinction by 1916.
Fact 34
Ospreys won’t catch a fish at every attempt. Young fledglings have a very poor success rate, around 5% to start with. However, as they acquire more experience, this success rate shoots up considerably. A recent study (2010) of ospreys fishing on an estuary in the northern Iberian Peninsula showed an average success rate of 69%. Young birds caught fish around two times in every five attempts (40%) whilst more experienced adults caught a fish nine times out of ten attempts (92%)!
Fact 35
In the last few years, ospreys breeding in Scotland have started to catch mackerel where historically they had not. This could either be as a consequence of more ospreys choosing nest sites nearer the sea, or a change in the feeding behaviour of the ospreys. Or both!
Fact 36
Every year at the Dyfi we check carefully the areas underneath the osprey nest and various perches. We find loads of ‘opercula’. The operculum is a hard flap covering and protecting the gills of a fish, it’s made out of fused bones. They look a bit like your Granddad’s big toe nail! This is the only part of the fish that the osprey can’t eat.
Fact 37
Every year, we record what species and size of fish the Dyfi ospreys catch. Roughly speaking, around half are grey mullet, 20% are flounder and 20% are trout. The other 10% consist of other fish like sea bass, garfish and perch.
Fact 38
Nora had a great dislike of flounders (or to be more scientific – had a least preference for flounders). There may be a good reason for this. Of all the fish caught by Monty, flounders not only have the highest water content and the least calories, but they are also very tough and take more calories to eat. Think of all those neck muscles straining to tear bits off. This is very hard to prove scientifically but is based on our (anecdotal) observations. A bit like the celery story – it takes more calories to eat celery and to digest it than there are in it!
Fact 39
Monty has on a couple of occasions caught a ‘twaite shad’ – an extremely rare fish in UK waters belonging to the Herring family. So rare in fact, you need a licence to catch one. Monty, now has all the relevant paperwork in plaice.
Fact 40
Ospreys typically catch fish that weigh between 150–300 g (5 –11 oz) and measure about 25–35 cm (10–14 in) in length, but the weight of fish they catch can range from 50 g (2 oz) to 2 kg (4.5 lb).
Wind tunnels are helping us understand about birds and their migration.
Sacha Dench and saving migratory birds: https://youtu.be/9ilgn0YkbCo?
Calico’s Tip for the Day: Do you own a dishwasher? Do you know what Tang is? Well, they have something in common – clean dishes! Calico got some tips from the Maytag factory and she is passing them along to you. First, do not rinse your dishes. Scrape them. Always use the automatic setting on your dishwasher. Once a month put in a packet of those orange drink crystals – Tang. It will clean and freshen your dishwasher!
Thank you for being with us today. Take care everyone. See you tomorrow!
Thank you to the following for their notes, posts, images, videos, articles, and streaming cams that helped me to write my post today: ‘A’, William Dunn, Menhaden-Little Fish, Big Deal FB, Window to Wildlife, WRDC, West Midlands Birding and the Friends of Lock Arkaig FB, Maria Marika, West Wildlife Rehab, Judy Harrington and Sydney Sea Eagles, wskrsnwings, Port Lincoln Ospreys, 367 Collins Street by Mirvac, Charles Sturt Falcon Cam and Cilla Kinross, Olympic Park Eagles, Growing Home Osprey Cam, Achieva Credit Union, Conserve Wildlife of NJ, Cornell RTH Cam, Raptor Resource Project/Explore, Cali Condor, Audubon, USFWS, All About Birds, All About Eagles, Dyfi Osprey Project, The New York Times.
