10,000 Birds

AUGUST 1, 2022

I have written about the interesting sex life of these jacanas a few times already (short version: female mates with male, lays a bunch of eggs for him to incubate and raise the chicks, leaves him, finds another male, repeat). Apparently, after a male first mates with a female, he throws out the first one or two eggs she lays in their nest.

Birds 147

Birds China Eggs Breeding 147

10,000 Birds

JULY 18, 2022

This would have allowed you to summarize your experience in sentences such as “A total of 98 boluses regurgitated by 52 chicks aged 1 day to 11 days after hatching form the sample and are shown to contain 323 food items.” It concludes that human activity influences the breeding activity of the lapwing. How efficient.

Birds 162

Birds South Korea Japan Abandon 162

10,000 Birds

NOVEMBER 10, 2022

Of course, it is hard to resist looking at a paper titled “Host personality predicts cuckoo egg rejection in Daurian redstarts” Basically, the personality of a female redstart (bold or shy) predicts the responses to parasitic eggs – bold hosts are more likely to reject parasitic eggs. Not this one though.

Birds 202

Birds China Eggs Owls 202

10,000 Birds

AUGUST 22, 2022

However, it is kind of sophisticated in that the females lay very individualized eggs in order to be able to detect the added eggs of parasite cuckoo finches. Let’s hope it can find some relatively unfragmented habitat for breeding – studies show that the failure rate of nests is much higher in fragmented habitats.

Zimbabwe 147

Zimbabwe Birds South Africa Benin 147

10,000 Birds

MAY 15, 2023

Unfortunately, the Ashy Drongos did not exactly do what he predicted that they would do – mob potential predators more frequently during the breeding season and mob the more dangerous predator (in this case, the Black Eagle) more intensely. If you do not want to be put in a cage, it presumably helps to be a bit aggressive.

China 186

China 2017 Birds Indonesia 186

10,000 Birds

NOVEMBER 13, 2023

In the non-breeding season, male Baya Weavers sometimes enter the basket-making trade, often with considerable success. Meanwhile, the females seem to have a much more relaxing life, at least in this early stage of the breeding season. You can see why here. My cats refuse to even try Fiery Minivets.

Birds 219

Birds Sri Lanka Taiwan Cats 219

10,000 Birds

JUNE 26, 2018

The Zoo episode focuses on two Pink Pigeon couples: The Stud and Serendipity, a male and female that the zoo people hope will mate and produce a viable egg, and Thelma and Louise, a same-sex pair-bonded couple who the zoo people hope will incubate the egg and nurture the chick. Because, Ms. They’re just not the greatest architects.

Mauritius 102

Mauritius Stud Zoos Eggs 102

10,000 Birds

MARCH 6, 2018

Scientists were largely limited to studies birds in breeding colonies, at least those we knew about and that were accessible (and, if you think that’s a complete list, you haven’t read the news that came out this week about a new colony of Adélie penguins found in the Danger Islands, Antarctica). Technology to the rescue!

Albatross 114

Albatross Penguins Research Breeding 114

10,000 Birds

MARCH 31, 2014

Erika is a first year graduate student studying Ecosystem Science and Conservation at Duke. The park is home to not one, not two, but large three colonies of breeding seabirds: the Brown Noddy , Magnificent Frigatebird , and Sooty Tern. Lots and lots of birds. It was for the birds that we made this journey in the first place.

Birds 181

Birds Florida Groups Breeding 181

10,000 Birds

APRIL 13, 2011

Earlier attempts to spread the risk around had failed, so Don and his team applied science to the problem, spending several months studying the birds in the wild in order to work out how to care for them and to decide what type of habitat to release them into. It worked, and the translocated birds were soon breeding.

Species 231

Species New Zealand Rats Endangered Species 231

10,000 Birds

JULY 3, 2012

As a Northeast birder I am familiar with the alarming decrease in the number of Red Knots along Atlantic shores and have signed petitions and written e-mails calling for legislation and rules that will limit the overharvesting of the horseshoe crab, whose eggs Red Knots depend on. million in the late 1990’s. Should the gulls be controlled?

Delaware 181

Delaware New Jersey Research Eggs 181

10,000 Birds

JULY 10, 2012

More than 150 bird species are known to have become extinct over the past 500 years, and many more are estimated to have been driven to extinction before they became known to science. Rueppell’s (facing left) and White-backed (three birds facing right) Vultures have worryingly leapt two categories from Near-Threatened to Endangered.

Endangered Species 194

Endangered Species Species South Africa Morocco 194