Cornell Lab of Ornithology updated their live feeder cameras at Sapsucker Woods in Ithaca, New York for an even crisper view of the birds.
Watch their feeders from the comfort of your home (click here). Stay tuned overnight and you may see an unexpected visitor. This flying squirrel was a nice surprise on 15 October 2019.
Like other members of the Corvid family, blue jays (Cyanocitta cristata) are very intelligent and have strong family ties. Some of their intelligence and social awareness is put to use to fool each other, especially where food is involved.
Watch the video above by Lesley The Bird Nerd to see how an adult blue jay played a trick on a young one that was planning to steal his food.
Baby bird east of Safety Sound, Alaska (photo by Barb Bens)
Last Sunday our Partnership for International Birding tour saw this baby bird near the mouth of the Solomon River east of Nome, Alaska. It took us a while to identify him.
His looks like a sparrow with white outer tail feathers but his back has golden camouflage like a golden plover.
This spring a pair of blue jays nested in my backyard and fledged a single youngster before Memorial Day.
The fledgling was short-tailed, perky and adventuresome, often standing wide-eyed in exposed open places. His parents followed him everywhere and seemed to say, “Be careful! Don’t stand out in the open like that!”
But the fledgling was too naive. By the third day he went missing, undoubtedly dead. His parents started to build a new nest.
They scouted together in my backyard, gathering moss and rootlets. According to the nest description in the Petersen Field Guide to Birds’ Nests blue jay nests are …
Bulky, well hidden in crotch or outer branch of coniferous or deciduous tree, 5-50 ft above ground, commonly 10-25 ft. Built by both sexes of thorny twigs, bark, mosses, string, leaves; lined with rootlets.
The second nest is so well hidden that I didn’t find it, but here’s what it would look like (photo by Henry T. McLin).
The pair has time to raise a second brood, especially if the female laid eggs in the first week of June. From first egg to fledging takes 38 to 45 days:
Blue jay egg laying takes 4-6 days (one egg per day, clutch of 4-6)
(*) Unfortunately the second brood failed, too. I saw a nestling on the ground, too young to fly, on July 7. I repeatedly placed it up high in the vicinity of the nest but the nestling kept hopping back down to the ground. Eventually it hid under the lip of our bird bath.
Blue jay baby on ground, 7 July 2019 (photo by Kate St. John)
Alaska Birding with PIB: Anchorage to Seward 18 June 2019
Red crossbills (Loxia curvirostra) are conifer specialists that breed across North America and Eurasia, from Alaska to Newfoundland, from Scotland to Japan. They are so tied to spruces, pines and firs that you won’t find them in deciduous forests nor anywhere that the cone crop has failed. That explains why in three decades I’ve seen only one red crossbill in western Pennsylvania.
Approximate red crossbill breeding range (map is hand drawn by Kate St. John from sources at HBW and IUCN)
Red crossbills eat conifer seeds by prying open the cones using their crossed bills. Their beaks have evolved to match the cones they open — and so have the cones. A 2010 study led by C. Benkman showed that it’s a continuous arms race in which the cones evolve to foil the beaks and the beaks evolve to open the cones. The crossbill-cone competition has resulted in 21 subspecies of red crossbills with different beaks and call types. One population in Idaho, the Cassia crossbill (Loxia sinesciuris), was given separate species status in 2017.
Though red crossbills don’t migrate, they range far and wide in search of food, calling “jip jip” as they fly. Their flocks are usually noisy but fall silent when they’re feeding intensely. In his Essential Field Guide Companion Pete Dunne describes them as Eclectic Parrot-Finches: wide-ranging, social, and parrot-like in behavior.
Red crossbills favor old growth conifer forests because the cone crop is heavier on trees more than 60 years old. If I’m lucky, today I’ll see the “Red Parrot-Finch of the Pines” near Seward, Alaska.
UPDATE: I wasn’t lucky. š
(photo and base map from Wikimedia Commons, breeding range drawn freestyle by Kate St. John; click on the captions to see the originals)
Alaska Birding with PIB: At Tangle River on Denali Highway 17 June 2019
In western Pennsylvania we rarely see longspurs, the sparrow-like birds whose long hind toe gives them their name, but two species of longspurs breed in Alaska.
Lapland longspurs (Calcarius lapponicus) are the most conspicuous songbird on the tundra as they prominently claim territory and a mate. The males flutter and sing above their chosen patch, advertising themselves in loud flight song displays.
Smith’s longspurs (Calcarius pictus) are harder to find partly because of their lifestyle. They don’t claim a territory, they don’t claim one mate, and they don’t use flight song displays. Instead the males sing from the top of a twig, “Hey, ladies! Come here.”
The fancy name for this is polygynandry. Each female and each male pairs and mates with two or three of the opposite sex. These birds are very busy during the breeding season!
Over a period of one week in the early spring, a female longspur will copulate over 350 times on average; this is one of the highest copulation rates of any bird. Males are well-equipped to deliver such large numbers of ejaculatesātheir testes are about double the mass of those of the monogamous and congeneric Lapland Longspur.
Every nest contains chicks of mixed parentage — the same mother, various dads. Fathers choose a couple of females and try to insure that most of the chicks are their own.
Males do not defend territories, but instead guard [their] females by following them closely. [Males] compete for fertilizations by copulating frequently in order to dilute or displace sperm from other males.
When John James Audubon named Smith’s longspur for his friend Gideon B. Smith he was unaware that these birds had such an unusual social life. It took a long time for humans to figure it out, beginning with pioneering behavioral work in the 1960s and now DNA tests today.
Inside the calm exterior of a Smith’s longspur is a very promiscuous bird.
Like eastern bluebirds and tree swallows, black-capped and Carolina chickadees are cavity nesters. They place their tiny nests inside woodpecker holes, birdhouses, or in cavities that they excavate on their own.
It takes a week or more for a chickadee pair to make their own nest hole so a suitable birdhouse is a great find for them. Do you have a birdhouse in your yard? Chickadees might have chosen it.
On Throw Back Thursday, here’s what to expect at the Chickadee Nest.
(photo from Wikimedia Commons; click on the caption to see the original)
