On that same field trip today, Alonso reported seeing a Wood Duck (Aix sponsa) carrying an egg. The bird was at some distance to him, and I didn’t see the bird. We discussed the sighting, and concluded that it was possible, but somewhat unusual.
There is a bit in the literature: Robert W. Strader et al. (The Wilson Bulletin 90:1, March 1978, pp. 131-132) report an observation and suggest that the purpose of egg carrying is to remove eggs damaged by a woodpecker, another animal, or mishap. Larry J. Hindman (The Wilson Journal of Ornithology 127:4, December 2015, pp. 759-761) reports an observation of a male Wood Duck carrying an egg, and discusses some other possible explanations for the behavior.
The removal behavior might be more common than we think. In our boxes, it’s sometimes been the case that we count x eggs on a given Sunday, with high certainty, and we count x-1 eggs the next Sunday.
Some links, Coffee and Birds Edition:
- Jodi Helmer reports on the nascent coffee industry in California. Even in this non-tropical climate, at least one farmer is going the shade-grown route:
Andy Mullins of Mullins Family Farm in Temecula… planted 1,000 coffee trees under the canopies of the avocado trees on his 4-acre farm.
- A study from India by Charlotte H. Chang et al. indicates that coffee plantations given over to robusta supported nearly the same level of biodiversity as arabica farms, as summarized by the Wildlife Conservation Society.
It’s very gratifying to read this acknowledgement:
The authors are indebted to the original BPP [Bird Phenology Program] observers and coordinators who collected the extensive data that comprise the BPP and were used here…. Thank you also to the BPP participants from around the globe who have worked to revive those records by digitizing and transcribing them in recent years.
The paper: “Long-Term Trends In Avian Migration Timing For the State of New York,” by Jessica Zelt, Robert L. Deleon, Ali Arab, Kevin Laurent, and Joel W. Snodgrass.
I haven’t transcribed cards for a while; it’s time to get back to it.
O Gray Catbird, who have been tapping at your reflection in my window glass, maybe if I post your picture on the internet you’ll be embarrassed and cut it out.
Biscayne National Park has partnered with the Tropical Audubon Society to promote a fun way to get new birders birding, especially kids. Birders can earn achievement certificates for identifying as many birds as they can within the confines of the park.
Listing rules follow the ABA Code of Ethics. To maximize the number of species seen, budding naturalists are encouraged to visit multiple locations on the Biscayne Birding Trail.
Here’s hoping other organizations across the country can put together similar programs.
↬ American Birding Association Birder’s Guide to Conservation and Community
Species preservation and coffee agriculture meet: Ed Yong explains the conservation prospects for the Red Siskin (Spinus cucullata).
Erik Eckholm chases migrants in New York.
I haven’t driven across two states to see a rare bird, although when that badly lost, gloriously hued painted bunting showed up in Brooklyn in late November, I did make the eternal subway ride from the Upper West Side to the far side of Prospect Park to get a glance and a picture.
Duarte S. Viana et al. have published research on the importance of migratory birds as a long-distance seed dispersal mechanism.
By sampling birds caught while in migratory flight by GPS-tracked wild falcons, we show that migratory birds transport seeds over hundreds of kilometres and mediate dispersal from mainland to oceanic islands.
Birds, habitat, coffee agriculture—and 10 ways of looking at Northern Virginia.
A reminder from BirdNote, with resource links, that shade-grown coffee is always a good idea.
A mini-roundup of bird-related links:
Richard Conniff hopes that Ospreys will nest in his neighborhood.
An osprey on the hunt circles over open water, hovers with a characteristic fluttering, decides this isn’t quite the spot, circles and hovers some more, and finally plunges feet-first into the water. It may struggle to become airborne again, with a fish up to 14 inches long mortally pierced between its talons. The bird then heads back to the nest with its unwilling passenger slung underneath. The fish travels headforemost, silvery and slim, and often with what the poet Mary Oliver called “a scrim of red rubies on its flashing sides.”
Ospreys are the overlooked beneficiary of the post-DDT era comeback, Mary Ann to the more charismatic Peregrine Falcon (Ginger) or Bald Eagle (Lovey Howell). Beautiful predators, just the same.