Hi All,
I just want to make everyone aware of a few changes to the falconcam. First, we plan to return the inward pointing camera as soon as possible and regain our two perspectives of these birds. Second, for a number of reasons we will be changing our broadcast mode for this stream and using a free online streaming provider. Some of the drawbacks are that the streaming quality may be reduced and we may face other issues that we have not faced during our trial period. A second drawback is that now our stream will be subject to advertisements. This is disappointing to us because we have been able to maintain the stream without advertisements until now and we feel that ads change the experience.
Thanks so much for enjoying the BRI Peregrinecam and we are pleased to keep this exciting project going. Many thanks for all of your support.
All the Best,
Patrick Keenan
BioDiversity Research Institute
Wednesday, November 18, 2009
Friday, November 6, 2009
Falcons tend the nest box.
In recent weeks the falcons, both male and female, have been visiting the nest. This continued territoriality is not common among all falcons. Some falcons have forsaken their breeding territories some time ago to begin an annual migration south before returning next spring.
The fact that the birds on the BRIperegrinecam remain suggests that they are finding ample food. I wonder what they are eating, I hope that we can uncover some feeding preferences of these birds throughout the year. What do you see the falcons eating?
Until next time,
Patrick Keenan
BioDiversity Research Institute.
Tuesday, October 20, 2009
Visit to the Falcon Site: 10/15/09
Hi All, on my recent visit to the Peregrine Falcon site I recovered this pellet. It is packed full of feathers, bones, and seed and berry casings--the regurgitated, indigestible morsels of a recent falcon meal. Although most people are familiar with owls producing pellets raptors of all shapes and sizes produce pellets. Given the number of seeds in the pellet and the size of the bones it seems likely that this pellet contains the remains of a seed-eating songbird. The photo below includes a ruler for scale and a different perspective. If you look closely you can see a feather arcing across the top and a bone just below the feather.
In this photo you can see the pellet sitting on the 'front stoop' of the falcon tray.
I'm very happy to be able to share this small discovery with you and provide these photos. I will keep this pellet intact and share it with students when it pertains to the subject of our many classroom visits! Please be in touch with your questions and comments and keep on enjoying the BRIperegrinecam!
Until Next Time,
Patrick Keenan
BioDiversity Research Institute
All photos are copyright of BioDiversity Research Institute
Friday, October 9, 2009
Falcons in October!
Hello All,
I am happy to see all of your comments regarding the falcons and their visits over the past months.
To address some of your questions: (1)No, the blog was not abandoned but we have elected to devote our energies to other projects and priorities during the non-breeding season but are very excited about the start of next season which is right around the corner! (2)Yes, we hope to keep this camera operational throughout the year with at least one of our views. (3) As many have noted our 'inward' perspective has its struggles. I plan to address that issue next week. I truly hope that you can understand our need to prioritize amid various projects and limited time and funding.
I recommend two things to look for this October on our webcam. First, signs of nesting activity or increased activity at the nest tray. This is a good indicator of future nesting efforts and site use and often spikes during October as the day length stimulates breeding behavior and territoriality in a number of bird species. Second, keep an eye out for other falcons. We are approaching the peak of falcon migration in Maine and there is a chance of seeing other falcons in the area.
Have a wonderful fall and thanks for enjoying the webcams.
All the Best,
Patrick Keenan
BioDiversity Research Institute
I am happy to see all of your comments regarding the falcons and their visits over the past months.
To address some of your questions: (1)No, the blog was not abandoned but we have elected to devote our energies to other projects and priorities during the non-breeding season but are very excited about the start of next season which is right around the corner! (2)Yes, we hope to keep this camera operational throughout the year with at least one of our views. (3) As many have noted our 'inward' perspective has its struggles. I plan to address that issue next week. I truly hope that you can understand our need to prioritize amid various projects and limited time and funding.
I recommend two things to look for this October on our webcam. First, signs of nesting activity or increased activity at the nest tray. This is a good indicator of future nesting efforts and site use and often spikes during October as the day length stimulates breeding behavior and territoriality in a number of bird species. Second, keep an eye out for other falcons. We are approaching the peak of falcon migration in Maine and there is a chance of seeing other falcons in the area.
Have a wonderful fall and thanks for enjoying the webcams.
All the Best,
Patrick Keenan
BioDiversity Research Institute
Monday, June 15, 2009
Falcon Fledge!
Hi All,
I am happy to report that our banded falcon chick fledged on Saturday June 6th. What a great event and success for this pair! Of late we have seen falcons visiting irregularly...this may be either of the adults or the chick herself. Thanks you so much for enjoying this birds journey with us and obviously we wish the bird good luck.
All the Best,
Patrick Keenan
BioDiversity Research Institute
I am happy to report that our banded falcon chick fledged on Saturday June 6th. What a great event and success for this pair! Of late we have seen falcons visiting irregularly...this may be either of the adults or the chick herself. Thanks you so much for enjoying this birds journey with us and obviously we wish the bird good luck.
All the Best,
Patrick Keenan
BioDiversity Research Institute
Thursday, May 21, 2009
Falcon Chick Springs Forward!
Contributed by Bruce Connery, Biologist, National Park Service.
Spring is edging closer to summer with each day and the chick is marking these days with amazing changes in development and growth. Almost three weeks have passed since hatching, and the slow changes witnessed in the beginning will soon be replaced with big daily changes in movements, behavior, and development. It helps to be the sole focus of your parent’s attention and to have been blessed with good weather this spring for Maine’s coastal areas. The eruption of feathers will become more and more apparent, beginning first along the wings and tail followed by the back and head and eventually everywhere. Soon the young chick will begin to actively take food from its parents and feed itself, matched with small forays around the scrape with bursts of wing flapping and hopping. All signs of a rapidly developing young falcon.
The witnessed changes on the developing chick suggest it is doing fine and suggests to biologists that the best time to enter the scrape to collect information is approaching. The chick’s development serves as a guide in determining the correct dates to collect the data and permanently mark the chick with identification bands with a minimal risk to both the chick and the adults. The bands provide a permanent tracking tool that is visible and not burdensome, allowing managers and anyone the opportunity to re-identify the bird throughout its lifetime without the need for additional handling by humans that is likely to be both stressful and an opportunity for injury. At this time, the unhatched eggs also will be collected as they will provide valuable information to biologists interested in learning of any embryo development and what contaminant burdens are present through chemical analyses. Combined, the results of these data will provide an inside view of some of the factors facing the adults and the young chick, being valuable information to biologists and managers trying to identify factors and conditions that are or can threaten these birds and their habitats.
Explanations of why only one egg hatched are abundant. The use of an artificial platform, or tray, as a scrape at this site is not unusual to falcon pairs in New England, as many have been documented throughout this region. However their use is less typical for most of the nesting territories found in Maine and for much of northern New England. Appropriately positioned trays often provide excellent nesting conditions on buildings and towers with their suitably-sized pea gravel substrate, superb drainage, and correct orientation to weather conditions. However, Maine and other northeastern states are blessed with numerous natural cliff faces that are found above rivers, lakes, coastal headlands, and on near shore islands. These natural cliff faces provide ample opportunities for peregrine adults to be highly selective in choosing the sites with the best drainage, protection from the elements, access and visibility, and foraging opportunities.
Bruce Connery
Biologist
National Park Service
Spring is edging closer to summer with each day and the chick is marking these days with amazing changes in development and growth. Almost three weeks have passed since hatching, and the slow changes witnessed in the beginning will soon be replaced with big daily changes in movements, behavior, and development. It helps to be the sole focus of your parent’s attention and to have been blessed with good weather this spring for Maine’s coastal areas. The eruption of feathers will become more and more apparent, beginning first along the wings and tail followed by the back and head and eventually everywhere. Soon the young chick will begin to actively take food from its parents and feed itself, matched with small forays around the scrape with bursts of wing flapping and hopping. All signs of a rapidly developing young falcon.
The witnessed changes on the developing chick suggest it is doing fine and suggests to biologists that the best time to enter the scrape to collect information is approaching. The chick’s development serves as a guide in determining the correct dates to collect the data and permanently mark the chick with identification bands with a minimal risk to both the chick and the adults. The bands provide a permanent tracking tool that is visible and not burdensome, allowing managers and anyone the opportunity to re-identify the bird throughout its lifetime without the need for additional handling by humans that is likely to be both stressful and an opportunity for injury. At this time, the unhatched eggs also will be collected as they will provide valuable information to biologists interested in learning of any embryo development and what contaminant burdens are present through chemical analyses. Combined, the results of these data will provide an inside view of some of the factors facing the adults and the young chick, being valuable information to biologists and managers trying to identify factors and conditions that are or can threaten these birds and their habitats.
Explanations of why only one egg hatched are abundant. The use of an artificial platform, or tray, as a scrape at this site is not unusual to falcon pairs in New England, as many have been documented throughout this region. However their use is less typical for most of the nesting territories found in Maine and for much of northern New England. Appropriately positioned trays often provide excellent nesting conditions on buildings and towers with their suitably-sized pea gravel substrate, superb drainage, and correct orientation to weather conditions. However, Maine and other northeastern states are blessed with numerous natural cliff faces that are found above rivers, lakes, coastal headlands, and on near shore islands. These natural cliff faces provide ample opportunities for peregrine adults to be highly selective in choosing the sites with the best drainage, protection from the elements, access and visibility, and foraging opportunities.
Bruce Connery
Biologist
National Park Service
Monday, May 4, 2009
Peregrine and Parenthood
Peregrines and Parenthood
By Ron Joseph, Wildlife Biologist, U.S. Fish and Wildlife
“How very exciting and quite a relief”: a blogger’s response to Patrick’s announcement of a falcon hatchling summarized our collective feelings. I couldn’t have stated it better myself. Admittedly, as the days dragged past a projected first hatch date, I had my doubts that any eggs had survived the cold snap that coincided with egg laying more than a month ago. Trying times are still ahead for this youngster and any sibling(s) that may hatch over the next few days (don’t be surprised if an egg or two doesn’t hatch). As my father was fond of saying, “They’re not out of the woods yet.” But there is reason for optimism. Peregrines are very dedicated parents so we’ll see food deliveries increase especially as the young mature. The adult male has been busy off camera caching food in “cupboards” such as crevices or ledges on old buildings or bridges. Those prey items will be retrieved and delivered to the attending adult. She’ll tear meat from a bird (most likely killed on the wing) before feeding it to her young. Since the young will be nearly full grown when they fledge in six weeks (six plus a few days for females), you can imagine how much food will be delivered by both parents.
At one month old, the young will compete with each other for food delivered by their parents. The nestlings will aggressively strike at food with their talons. It’s during this stage of their young’s development that parents, not wanting to be “footed” by a hungry youngster’s sharp talons, will drop food off quickly before departing the nest box. Some young are reluctant to leave the comfort of the eyrie when it’s time to fledge (sounds like my 19-year old son!). I once watched an adult female peregrine in Bryce Canyon National Park fly close to her eyrie clutching a dead white-throated swift in an attempt to encourage one reluctant youngster to fledge. It was actually quite entertaining. The youngster’s siblings had already fledged. But this particular youngster had no intention of leaving the red sandstone cliff eyrie. Each time a parent flew close by carrying food, the youngster would open its wings and scream defiantly. Finally, as the nestling leaned forward again with open wings, a strong gust of wind lifted it sideways out of the nest. The fledgling soon discovered the value of wings as it awkwardly chased its parents. The adult female dropped the dead swift and the youngster caught it in mid-air.
Peregrines in Maine also prefer to catch birds on the wing. Experienced adults use the sun to their advantage during hunting forays. They “climb” high in the sky, positioning themselves between the sun and their targeted prey knowing full well that an unsuspecting blue jay, for example, won’t look up into the sun where the peregrine is making its stoop. Peregrines fly over 100 mph (and sometimes much more) in a dive; their talons form a loose fist until the moment they strike. When peregrines hit their prey, be it blue-winged teal or grackle, the feathers fly as the injured bird tumbles through the air.
I collected feathers from over a dozen different bird species (i.e. rose-breasted grosbeak, northern flicker, mourning dove, American robin, to name a few) in one western Maine eyrie in the mid-90s. The Maine Dept. of Inland Fisheries and Wildlife sent the feathers to the late Roxie Laybourne of the Smithsonian Institute for identification. She was the world’s leading expert on bird identification from forensic evidence. I was privileged to work with Ms. Laybourne when I worked as a raptor biologist in Utah. She helped me identify lots of prey remains from many peregrine eyries. She could identify the age and sex of a bird based on one feather. Ms. Laybourne told me once that she helped the FBI solve a murder by matching the pillow feathers in a dead man’s nose with the pillow used by the murderer!
If all goes well in the weeks ahead, the young peregrine(s) should fledge sometime in mid-June. The nest box will become littered with small feathers, desiccated prey bones, and lots of white wash (falcon excrement). Be sure to turn on the volume because nestlings are quite vocal, especially when food is delivered.
Ron Joseph
Wildlife Biologist
By Ron Joseph, Wildlife Biologist, U.S. Fish and Wildlife
“How very exciting and quite a relief”: a blogger’s response to Patrick’s announcement of a falcon hatchling summarized our collective feelings. I couldn’t have stated it better myself. Admittedly, as the days dragged past a projected first hatch date, I had my doubts that any eggs had survived the cold snap that coincided with egg laying more than a month ago. Trying times are still ahead for this youngster and any sibling(s) that may hatch over the next few days (don’t be surprised if an egg or two doesn’t hatch). As my father was fond of saying, “They’re not out of the woods yet.” But there is reason for optimism. Peregrines are very dedicated parents so we’ll see food deliveries increase especially as the young mature. The adult male has been busy off camera caching food in “cupboards” such as crevices or ledges on old buildings or bridges. Those prey items will be retrieved and delivered to the attending adult. She’ll tear meat from a bird (most likely killed on the wing) before feeding it to her young. Since the young will be nearly full grown when they fledge in six weeks (six plus a few days for females), you can imagine how much food will be delivered by both parents.
At one month old, the young will compete with each other for food delivered by their parents. The nestlings will aggressively strike at food with their talons. It’s during this stage of their young’s development that parents, not wanting to be “footed” by a hungry youngster’s sharp talons, will drop food off quickly before departing the nest box. Some young are reluctant to leave the comfort of the eyrie when it’s time to fledge (sounds like my 19-year old son!). I once watched an adult female peregrine in Bryce Canyon National Park fly close to her eyrie clutching a dead white-throated swift in an attempt to encourage one reluctant youngster to fledge. It was actually quite entertaining. The youngster’s siblings had already fledged. But this particular youngster had no intention of leaving the red sandstone cliff eyrie. Each time a parent flew close by carrying food, the youngster would open its wings and scream defiantly. Finally, as the nestling leaned forward again with open wings, a strong gust of wind lifted it sideways out of the nest. The fledgling soon discovered the value of wings as it awkwardly chased its parents. The adult female dropped the dead swift and the youngster caught it in mid-air.
Peregrines in Maine also prefer to catch birds on the wing. Experienced adults use the sun to their advantage during hunting forays. They “climb” high in the sky, positioning themselves between the sun and their targeted prey knowing full well that an unsuspecting blue jay, for example, won’t look up into the sun where the peregrine is making its stoop. Peregrines fly over 100 mph (and sometimes much more) in a dive; their talons form a loose fist until the moment they strike. When peregrines hit their prey, be it blue-winged teal or grackle, the feathers fly as the injured bird tumbles through the air.
I collected feathers from over a dozen different bird species (i.e. rose-breasted grosbeak, northern flicker, mourning dove, American robin, to name a few) in one western Maine eyrie in the mid-90s. The Maine Dept. of Inland Fisheries and Wildlife sent the feathers to the late Roxie Laybourne of the Smithsonian Institute for identification. She was the world’s leading expert on bird identification from forensic evidence. I was privileged to work with Ms. Laybourne when I worked as a raptor biologist in Utah. She helped me identify lots of prey remains from many peregrine eyries. She could identify the age and sex of a bird based on one feather. Ms. Laybourne told me once that she helped the FBI solve a murder by matching the pillow feathers in a dead man’s nose with the pillow used by the murderer!
If all goes well in the weeks ahead, the young peregrine(s) should fledge sometime in mid-June. The nest box will become littered with small feathers, desiccated prey bones, and lots of white wash (falcon excrement). Be sure to turn on the volume because nestlings are quite vocal, especially when food is delivered.
Ron Joseph
Wildlife Biologist
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