Are you suggesting that Ground Ivy nectar/pollen is inferior to that which is produced by other flowers? Please share the source of your pollen/nectar analysis comparing Ground Ivy to other flowers?
And, what study/data are you drawing from which demonstrates bumblebees visit Ground Ivy because they are desparate, not because they prefer it?
On 12/21/06, Liz Day <beebuzz@...> wrote:
>That's interesting that bees of all those proboscis lengths will use the
>same flower. Quantitative data on frequency of use by each of those
>species would be interesting. Bumble bees will investigate a wide range of
>flowers, in my experience, but typically settle quickly on those that are
>a good morphological match and rewarding.
I would guess they are short of food in early spring and desperate for
anything with nectar. Often in early spring I have walked around urban
areas and there is very little of *anything* in bloom (at least on the
ground; there may be bleeding sap or nectar/pollen in some trees).
Indianapolis Indiana USA