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Dear all,

I am interested in literature documenting massive die off due to algal poisoning from different cyanobacteria species ( Microcystis sp., Anabaena sp., etc) of herons, pelicans, ducks. So far I am aware about some papers relating the deaths with poor water quality. I am more focus on cyanotoxin contamination in tissues, lethal dose and so on. Any feedback will be highly appreciated.

Regards, 

Konstantinos

Please provide me references where I can get the answer.

We're weighing options on how to fit GPS transmitters to adult Black Swans in New Zealand. They weigh ~4-7 kg depending on sex. 

We have concerns about using collars as they may get caught in vegetation while foraging. Also concerned about satellite uplink capabilities down here; the telemetry company/network here doesn't offer collars, so we'd have to go through an overseas company. Another option is a dorsal attachment, but we've been advised against using any type of harness. We're leaning towards using a tail-mount approach, fitting a ~40g transmitter (Sirtrack PinPoint Iridium) to tail feather(s) just after moult. We should be able to get ~3 fixes per day for 9 months, which would cover winter and the following breeding season. However, we're concerned about whether these will stay attached (they cost ~$2,500 NZD each). I've found some studies where tail-mounts have been used on gannets, penguins, gulls... but nothing on swans or other large waterfowl. Curious if anyone has any insight or tips? 

Thanks in advance.

Mark

Species of waterfowl in Trinidad

Migratory patterns

Feeding and Nesting Habitats

I have a 27-year Mid-winter Waterfowl Survey Data (species list and abundances) for a lake and I want to compare the years and groups of years in terms of their avian diversity. The counts are semi-standardized (for practical purposes I will have to assume they are fully standardized). Which biodiversity indices should I use to compare years and groups of years in terms of their avian diversity?

P.S.: I cannot use R. I only use Excel for now but I have friends who are really good at R. 

I am curious how snow and or temperature affect the timing of initial arrival and subsequent dispersal of spring staging waterfowl in the sub arctic. Especially for species such as Canada geese, American black ducks, common goldeneye, and greater scaup, when they are near their final breeding grounds but are waiting for the landscape to thaw.

Deciduous trees has increase and waterfowl has decreased in an already considered dry area 

I have Mid-winter Waterfowl Survey data for a lake (counts that are done in mid-winter every year - species and individuals from each species are counted). The data looks something like this https://ibb.co/bZeALk . How can I calculate rarefied species richness for the count years? Can somebody explain to me how to do it in a plain language (I'm new to statistics)? I'm hoping to get indices that are numbers so I can compare the years. Thanks in advance! 

I am doing research on some species of wild waterfowl/ducks. I would like a protocol to evaluate their nesting sites... distance between clutches, type of environment that they lay, (wetlands, trees, tropical forests),types of vegetation present at each site...

Is there who study these species? During autumn migration of waterfowl on the Kiev reservoir (Ukraine) I observed many flocks of Goldeneyes. Flocks of Black-headed Gulls always were fed with them together. What cause of this occurrence?